The MotoSport.com 520 F5 Sprocket And Chain Kit includes ONE Steel Countershaft (Front) Sprocket, ONE F5 Rear Sprocket, and your choice of ONE Premium 520 Drive Chain, each with the following features:

Sprockets / Chainwheels Included:

Vortex Front Steel Sprocket:

• Made of the highest quality steel.
• Case hardened.
• Drilled lightening holes on most applications.

Vortex F5 Rear Sprocket:

• Lightweight F5 aluminum racing sprocket.
• 100% CNC manufactured in the U.S.A.
• Specially formulated alloy per Vortex specifications.
• PTFE black hardcoat - increases wear resistance.
• Unique tooth design increases sprocket longevity.
• Vortex patented sprocket design is unlike any other sprocket.

Your Choice of Drive Chain:

Notes on Chain Type:

• Q4 Sealed Ring - Q4 seal ring and reinforced pin and roller provide superior wear resistance, higher impact resistance and fatigue strength. Q4 seal ring offers less friction, which leads to less power loss, almost half that of standard O-ring chain.
• X2-Ring - D.I.D proprietary X-ring design. New X2-ring design provides 40 percent greater wear resistance and better overall chain life.
• SX2-ring - Slim-sized SX2 ring strengthen the stiffness by reducing clearance between plates. SX2 ring has better wear-resistant performance than SX ring by 30%.
• Quadra-X ring - EK Chains proprietary X-ring style.
• ZX-ring - Adopted new ZX-ring and lasts 15% longer than ZVX series.
• SRS-Ring - Renthal proprietary X-ring design. The special SRS ring is pre-loaded during assembly creating a spring effect. As the chain wears, conventional O-rings and X-rings lose their seal integrity, whereas the SRS ring is designed to maintain itself during use, keeping a tighter seal against the side plates. This offers increased longevity as the specially formulated grease remains incased around the critical pin and bushing area longer while also keeping dirt, water and other contaminants out.
• RX-Ring - RK proprietary X-ring design. RK RX-ring seals are made from an advanced Nitrile Butadiene composite for maximum performance and wear life. Viewed in cross-section, the RK "RX-Ring" has two lubrication pools and seal points versus the single seal point / pool design of a regular O-ring chain.
• XW-Ring - RK proprietary X-ring design. Uses an advanced design with XW-Ring construction for better sealing that provides extended wear and chain life up to 100% over conventional chains. XW-Ring chains are the best high-speed, extreme heat performance chains available today.
• DG-Ring - Sunstar proprietary X-ring design. DualGuard sealed ring street bike chain technology where the sealing ring has an 'X' shape - meaning there are two sealing points and two lubrication pools versus the one-sided, single-lip design of a standard O-ring. This sealed ring design type dramatically improves lubricity in high heat conditions while providing lower friction and longer chain life.
• TG-Ring - Sunstar proprietary X-ring design. TripleGuard sealed ring technology where there are three sealing lips and lubrication pools on each side of the ring to maintain top performance in high heat, extreme conditions; the TripleGuard ring type is the best for lubrication and protection.
• Duo Glide (X-Ring) - Vortex proprietary X-ring design. Duo Glide seal design reduces heat and friction resulting in a seven times longer wear life than a standard O-ring chain.
• Tri Glide (X-Ring) - Vortex proprietary X-ring design. Tri Glide seal provides three pockets of lubrication and two stabilizers ultimately reducing heat, friction, and increasing wear life by as much as 10 times over standard O-ring chains.

Note for installing X-ring chains: As X-ring chains are wider than standard roller chains, when fitting an X-ring chain to a motorcycle that was fitted with a non O-ring chain as original equipment, it is essential to check that there is proper clearance of the engine cases near the countershaft sprocket and any other places of close contact. Failure to do so could result in damage to the chain and motorcycle and could ultimately cause the chain to fail.

Some Helpful Tools: Try the Motion Pro Chain Breaker & Riveting Tool or BikeMaster's Heavy-Duty Chain Breaker & Rivet Tool to make removing your old chain and installing your new chain as easy and painless as possible.

Note: Image is for reference ONLY, actual product may vary based on fitment and selection.

BikeMaster 520 BMXR X-Ring Chain:

• Ideal O.E.M. replacement Q4 Sealed Chain (Q4 seal-ring chain) offers 1.5 to 2 times longer wear resistance than regular O-ring chains.
• Each refined component, designed with computer analysis, provides higher tensile strength.
• Specially controlled heat treatment means tougher material and more durability.
• Q4 seal ring and reinforced pin and roller provide superior wear resistance, higher impact resistance and fatigue strength.
• Q4 seal ring offers less friction, which leads to less power loss, almost half that of standard O-ring chain.
• Round rivet head offers superior rigidity over two or four-point (quad-staked) riveting.
• Average tensile strength of 8,500 pounds.
• Maximum rated displacement: 750cc.
• Includes clip master link.
• Note: This chain must be correctly matched to the machine size and power output. Failure to do so could result in failure of the chain, causing damage to the machine or other property, serious injury to the rider or others, or even death of the rider or others. It is the responsibility of the installer to ensure that the chain selected is correctly matched to the machine and installed correctly. If you have any doubts, contact a professional before use.

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BikeMaster 520 BMXR X-Ring Chain - Colored:

BikeMaster is pleased to announce the addition of colored chains to their BMXR Series Sealed Chain product line. The chains will now be available in red, blue, green, yellow, orange and pink, making it easy for customers to customize their bikes to fit their style.

Made in Japan, each chain is an O.E.M. replacement Q4 Sealed Chain that offers 1.5 to 2x longer wear-resistance than standard O-ring chains. They have been designed with computer analysis to provide refined components and higher tensile strength. Each chain has also undergone a specially controlled heat treatment. This results in a chain that is tougher and more durable. The Q4 seal ring with reinforced pin and roller ensure higher impact resistance and fatigue strength as well as less friction.

• Ideal O.E.M. replacement Q4 Sealed Chain (Q4 seal-ring chain) offers 1.5 to 2 times longer wear resistance than regular O-ring chains.
• Each refined component, designed with computer analysis, provides higher tensile strength.
• Specially controlled heat treatment means tougher material and more durability.
• Q4 seal ring and reinforced pin and roller provide superior wear resistance, higher impact resistance and fatigue strength.
• Q4 seal ring offers less friction, which leads to less power loss, almost half that of standard O-ring chain.
• Average tensile strength of 9,000 pounds.
• Max engine size of 1,000cc street / 750cc off-road.
• Includes clip master link.
• Note: This chain must be correctly matched to the machine size and power output. Failure to do so could result in failure of the chain, causing damage to the machine or other property, serious injury to the rider or others, or even death of the rider or others. It is the responsibility of the installer to ensure that the chain selected is correctly matched to the machine and installed correctly. If you have any doubts, contact a professional before use.

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D.I.D 520 VX2 X-Ring Chain:

D.I.D's Pro-Street X-Ring VX Series Chains are high quality X-Ring chains with superior strength to withstand the horsepower of today's dual sports and trials bikes. The VX Series uses D.I.D's patented low friction X-Ring for maximum performance.

• Greater rigidity (7% higher than previous VM chain) creates smother handling, reduced power loss and quicker response.
• Highest value in all D.I.D series.
• D.I.D X-Ring has half the friction and 50 - 100% longer wear life compared to typical O-ring chains.
• Superior longer life than previous VM series.
• Solid rollers.
• Shot-peened parts.
• Pre-stretched.
• Extended riveted bushing "Anti-Kink" design.
• Replaces the Professional O-ring V Series and the Premium X-ring VM series chains.
• Average tensile strength of 8,210 pounds.
• Wear life index: 3500.
• Ideal for bikes and ATV's up to 750cc.
• Weight (per 100 links): 3.35 pounds.
• Includes clip-style master link.

Half the Power Loss - Compared with Normal O-ring chains, D.I.D's patented X-Ring construction reduces friction by twisting between the side plates instead of being squashed. Normal O-rings and other makers' modified O-rings have squashed points that increase friction. The twisting action of the X-Ring disperses the pressure and minimizes power loss.

1.5 to 2 Times Longer Wear Resistance - Compared with Normal O-ring chains, the X-Ring's four contact points greatly increase its sealing performance. This keeps the dirt out and the lubrication in much better than any other O-ring. X-Rings have the greatest wear resistance of any other type of O-ring or non-O-ring chain.

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DID 520 ZVMX Series X-Ring Chain:

D.I.D's engineers are continuously improving chain designs in order to handle the tremendous horsepower loads of today's high performance motorcycles. In developing the new DID ZVM-X series, D.I.D focused on "Rigidity." Traditionally, "Tensile Strength" has been the bench-mark to indicate overall strength, but tensile strength is only a laboratory static measurement of a chain's fracture point. Rigidity, on the other hand, is the ability of a chain to withstand the forces that occur in the real world that riders experience. Increased rigidity means better power transfer from the engine to the ground, greater resistance to stretching under load, and overall improved performance that meets the demands of the current high-power bikes and the people who ride them.

Half the Power Loss - Compared with Normal O-ring chains, D.I.D's patented X-Ring construction reduces friction by twisting between the side plates instead of being squashed. Normal O-rings and other makers' modified O-rings have squashed points that increase friction. The twisting action of the X-Ring disperses the pressure and minimizes power loss.

1.5 to 2 Times Longer Wear Resistance - Compared with Normal O-ring chains, the X-Ring's four contact points greatly increase its sealing performance. This keeps the dirt out and the lubrication in much better than any other O-ring. X-Rings have the greatest wear resistance of any other type of O-ring or non-O-ring chain.

• Increased rigidity for better power transfer and greater resistance to stretching under load.
• Overall improved performance that meet the demands of the current high-power bikes.
• Designed to meet requirements of machines bigger than 1000cc.
• Same excellent characteristics of the ZVM chains, but its new X2-ring design provides 40 percent greater wear resistance and better overall chain life.
• Average tensile strength of 8,745 pounds.
• Wear life index: 3500.
• For use on Superbikes; maximum rated displacement 1200cc.
• Weight (per 100 links): 3.59 pounds.
• Includes a rivet-style master link.

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EK Chains 520 3D GP SX2-Ring Chain:

Premium Motorcycle Chain - Elegant, Strong, Detailed and Magnificent, Ultimate Shape with Flexibility and Strength.

ThreeD New Performance:

• Plating:
• ThreeD chain is impressively and elegantly shining, appealing as premium chain that cannot be ignored.
• Inner Plate with Lightening Hole:
• EK Chains creates a lightening hole in each inner plate without weakening the plate according to the computer analysis.
• This plate enables the chain to be light, remove mud from the hole, and dissipate heat effectively.
• Reduced Friction:
• The exclusive QX2 and SX2 ring contributes to reduction of friction (compared with EK Chains' existing products).
• Chromium Carbide Pin:
• Chromium Carbide pin surface coating increases hardness and reduces chain wear.
• SX2 Ring:
• Slim-sized SX2 ring strengthen the stiffness by reducing clearance between plates.
• SX2 ring has better wear-resistant performance than SX ring by 30%.
• Lightweight:
• Plate: Special three-dimensional plate shape strengthens a chain without making it heavy.
• Pin: Both ends of the pin have a lightening hole.
• Transmission Efficiency:
• ThreeD parts are precisely manufactured, leading to a great improvement of transmission efficiency.
• Precise Forging Process:
• EK Chains makes their ThreeD chains highly stiff, leading to better acceleration and efficient engine work.
• Dimpled Outer Plate:
• Dimpled outer plate shows strong, elegant, and advanced 3D design.
• Edge-Cut Inner Plate:
• Reduces friction and realizes smooth engagement with sprocket.
• Suggested Applications:
• 250cc - 1,000cc.
• MLJ (Rivet-type) Master Link:
• Comes standard with ThreeD 520GP, 520Z, 525Z, 530Z (can be used for ThreeD 520SM as optional link).
• As good as chain in terms of fatigue strength - Requires special riveting tool to install.

Five concepts to make the IDEAL ThreeD chain a reality:

• Impressive:
• Ultimate plate shape.
• 3D-designed beautiful curved form is an evolutionary shape with various functions in the next generation.
• Dynamic:
• Astonishing transmission efficiency.
• Smooth and powerful acceleration by excellent transmission performance.
• Elegant:
• Bright premium chain.
• Nothing but the 3D design makes it possible to have an elegant form and everlasting beautiful light reflection.
• Advanced:
• Applying brand-new revolutionary process of manufacturing.
• Far better than standard chains in every aspect such as fatigue strength, product quality and so on.
• Aiming for no initial elongation.
• Light:
• Slim design with the minimum weight.
• Produced by exclusive technology to strengthen a chain without making it heavy.

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EK Chains 520 SRX2 QX-Ring Chain:

The Ultimate Sportbike Chain: The SRX2 Series chains are an excellent value for any street machine. The SRX2 chains feature lightening holes, reduced friction and Quadra X-Ring design which increases chain life from up to two times longer than standard O-Ring chain.

• Can be used for street or dirt.
• Max displacement: Street - 750cc / Dirt - 650cc.
• Tensile strength: 8500 pounds.
• Quadra X-Ring design - QX-Ring is 40% less friction and 150% more durable.
• Lightening holes reduce weight without compromising strength.
• Comes with clip-style master link; rivet and screw types sold separately.

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EK Chains 520 MVXZ2 Quadra-X Ring Chain:

EK's Supreme Quadra-X Ring Chains, The Ideal O.E. Replacement.

EK's MVXZ2 Quadra-X Ring chain is the ideal replacement chain for any 1000cc street bike. Features like lightening holes in the sideplates, large-diameter pins, and friction-reducing Quadra-X Rings help ensure high-performance and up to two times increased wear life compared to a standard O-ring chain.

• For street or dirt use.
• Maximum displacement: Street - 1000cc; Dirt - 750cc.
• Tensile strength: 9000 pounds.
• Standard with rivet-type masterlink; clip-type (semi-press) or screw-type masterlinks optional and sold separately.

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EK Chains 520 ZVX3 NX-Ring Chain:

The Pinnacle of Chain Technology.

• Ultra Strong: ZVX3 series chains easily surpass every other brand with a tensile strength of 11,100 pounds.
• New ZX-ring: Adopted new ZX-ring and lasts 15% longer than ZVX series.
• Minimizing the clearance between the plates: Improved stiffness and weight (4.85/100 pounds).
• Tensile Strength: 9,400 pounds.
• Weight: 3.97 pounds per 100 links.
• Maximum Displacement: 1,200cc.
• MLJ Rivet-type Connecting Link: The MLJ is the most dependable connecting link, more commonly used on street machines. Requires special riveting tool to install.
• Note: May also use the SLJ Screw-type Connecting Link, sold separately.

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Renthal 520 R4 SRS Chain:

Renthal's R4 SRS Road chain is a specially developed sealed ring chain utilizing Renthal's Self Regulating Seal (SRS) technology to increase the service life of the chain in road applications. The special SRS ring is pre-loaded during assembly creating a spring effect. As the chain wears, conventional O-rings and X-rings lose their seal integrity, whereas the SRS ring is designed to maintain itself during use, keeping a tighter seal against the side plates. This offers increased longevity as the specially formulated grease remains incased around the critical pin and bushing area longer while also keeping dirt, water and other contaminants out.

The Renthal "Road R4" chain is supplied with a solid pin rivet link, matching the durability of the chain.

• SRS ring technology enhances chain flexibility and offers smoother operation than standard O-ring chains.
• All R4 SRS Road chains feature high-alloy steel plates and pins, solid bushings and rollers, shot-peened side plates for added strength and gold side plates.
• Special quad riveting process and thicker outer plates increases overall strength.
• Chains come pre-stretched from the factory so less adjustment is needed during initial break-in.
• Average tensile strength / Maximum displacement: 8062 pounds / 1000cc.
• Every chain comes with a pair of latex gloves for mess free installation.

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Renthal 520 RR4 Race Chain:

A highly specialized lightweight 520 sealed-ring chain developed exclusively for Superbike racing applications where a combination of lightweight and durability are a must. Utilizes Renthal's self-regulating seal (SRS) technology to increase service life. The specially developed self-regulating seal (SRS) ring is pre-loaded during assembly creating a spring effect. As the chain wears, conventional O-ring and X-rings loose their seal, however, the SRS ring has the ability to unload itself during use keeping a tighter seal against the side plates. This offers increased longevity as the specially formulated grease remains trapped around the critical pin and bushing area longer while also keeping dirt, water and other contaminants out.

• SRS ring technology enhances chain flexibility and offers smoother operation than standard O-ring chains.
• All R4 SRS Road chains feature high-alloy steel plates and pins, solid bushings and rollers, shot-peened side plates for added strength and gold side plates.
• Special quad riveting process and thicker outer plates increases overall strength.
• Chains come pre-stretched from the factory so less adjustment is needed during initial break-in.
• Only available in 520 pitch.
• Supplied with a solid pin rivet link, matching the durability of the chain.
• Average tensile strength / Maximum displacement: 8204 pounds / 900cc.
• Every chain comes with a pair of latex gloves for mess free installation.

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RK 520 XSO RX-Ring Chain:

As part of their continuing quality improvement program, the RK Chain Factory has made a running production upgrade to their best selling 520XSO chain. The 520XSO chain features RK's proprietary "RX-Ring" seal design and is offered in 520, 525 and 530. Viewed in cross-section, the RK "RX-Ring" has two lubrication pools and seal points versus the single seal point / pool design of a regular O-ring chain. RK's new GBXSO chains offer quality, performance and unbeatable value, for all but the most demanding high performance applications.

• High-performing, durable chain that will last five to eight times longer than your standard motorcycle chain.
• Constructed from polished, shot-peened alloy steel providing high tensile strength for maximum performance.
• RK RX-ring seals are made from an advanced Nitrile Butadiene composite for maximum performance and wear life.
• Side plate treatment helps prevent corrosion.
• Designed to make any motorcycle look stylish.
• Average tensile strength of 8,500 pounds.
• Wear life index: 750.
• Maximum displacement (street / dirt): 750cc / 750cc.
• Weight (per 100 links): 3.36 pounds.
• Includes a rivet-style master link.

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RK 520 GXW XW-Ring Chain:

520GXW is RK's premium quality 520 XW-Ring chain. XW-Ring chains are the best high-speed, extreme heat performance chains available today. So, If you've modified your ride into an extreme high-speed machine, you need the strength and performance of GXW. With a maximum tensile strength rated at 8800 foot pounds and suitable up to 1000cc street bikes and 750cc off-road bikes, GXW can handle anything you dish out!

• Strong chain with great durability for aggressive motorcycle riding and racing.
• Uses an advanced design with XW-Ring construction for better sealing that provides extended wear and chain life up to 100% over conventional chains.
• Constructed from polished, shot-peened alloy steel providing high tensile strength for maximum performance.
• Side plate treatment helps prevent corrosion.
• Designed to make any motorcycle look stylish.
• Average tensile strength of 8,800 pounds.
• Wear life index: 1000.
• Maximum displacement (street / dirt): 1000cc / 750cc.
• Weight (per 100 links): 3.75 pounds.
• Includes a rivet-style master link.

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Sunstar 520 Road Dualguard Sealed Chain:

Sunstar's heavy duty, street motorcycle chain model is the RDG series (RDG = Road Dual Guard) for 520, 525 and 530 applications. It uses Sunstar's DualGuard sealed ring street bike chain technology where the sealing ring has an 'X' shape - meaning there are two sealing points and two lubrication pools versus the one-sided, single-lip design of a standard O-ring. This sealed ring design type dramatically improves lubricity in high heat conditions while providing lower friction and longer chain life - and it is available for just about every street motorcycle on today's market. It comes in the natural color option and uses a strong rivet-type connecting link. For a higher performance road chain at a non-premium price, the Sunstar RDG answers the bell and is great for everything from everyday commuting to closed course riding.

• Features Sunstar's DG-ring (DualGuard) design for better performance and durability.
• Great choice for any type of street use; perfect choice for high-performance riding but at a non-premium price.
• Only available in a Natural finish.
• Average tensile strength of 8,500 pounds.
• Maximum rated displacement (street / off-road): 750cc / 750cc.
• Weight (per 100 links): 3.36 pounds.
• Includes rivet-style master link.

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Sunstar 520 RTG1 Works Tripleguard Sealed Racing Chain:

For a top of the line, premium-level roadracing chain, Sunstar offers the RTG1 series - Sunstar's highest performing roadracing chain - for 520 and 530 street applications (RTG1 = Road Triple Guard). This Works level chain features the TripleGuard sealed ring technology where there are three sealing lips and lubrication pools on each side of the ring to maintain top performance in high heat, extreme conditions; the TripleGuard ring type is the best for lubrication and protection. Both the 520 and 530 are available in pre-cut lengths and come in the gold color option (gold outer and inner plates). While the 520 is great for any bike 1000cc or less which already uses a 520 pitch, the 530RTG1 is suitable for the high-performance, larger displacement machines like the Suzuki Hayabusa, Kawasaki ZX-14R Ninja and others in the same class that use 530 pitch. Both options use the rivet-type connecting link and are well suited to handle the demands of the toughest racing conditions encountered on the street.

• Utilizes exclusive TG-ring (TripleGuard) for the ultimate in heat prevention and lubricity even in extremely harsh conditions.
• Assembled of the best 100% heat treated components.
• Extremely strong, yet also in a lightweight design - weighing just over 4 pounds per 100 links.
• Only available in Gold finish.
• Average tensile strength of 8,760 pounds.
• Maximum rated displacement (street / off-road): 1000cc / 750cc.
• Weight (per 100 links): 4.30 pounds.
• Includes rivet-style master link.

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Vortex 520 MV3 Black SX / MX Racing Chain:

• Average tensile strength of 9,000 pounds.
• Maximum rated displacement (street / off-road): NA / 500cc.
• Includes clip-style master link.
• Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

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Vortex 520 SV3 Black Street / Roadrace Chain:

• Duo Glide seal design reduces heat and friction resulting in a seven times longer wear life than a standard O-ring chain.
• Average tensile strength of 8,500 pounds.
• Maximum rated displacement (street / off-road): 750cc / NA.
• Includes rivet-style master link.

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Vortex 520 RV3 Black Street / Roadrace Chain:

• Tri Glide seal provides three pockets of lubrication and two stabilizers ultimately reducing heat, friction, and increasing wear life by as much as 10 times over standard O-ring chains.
• Average tensile strength of 8,800 pounds.
• Maximum rated displacement (street / off-road): 1000cc / NA.
• Includes rivet-style master link.

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