The MotoSport.com Sunstar Chain & Works Z Sprocket Kit includes ONE Steel Countershaft (Front) Sprocket, ONE Steel Rear Sprocket, and your choice of ONE Premium Drive Chain, each with the following features:
Sprockets / Chainwheels Included:
Sunstar is the largest O.E.M. supplier of sprockets and brake rotors in the world. In fact, your motorcycle probably came from the factory with a Sunstar sprocket. Need a reason to choose Sunstar? Every Sunstar product is imbued with superior quality, uses an exclusive heat-treatment and quenching process, is based on advanced research and design, and is sold at an added value price.
Sunstar Front Sprocket:
- Manufactured from case-hardened chromoly steel for the ultimate in strength and durability.
- "Parkerizing" surface treatment for rust and corrosion resistance.
Sunstar Works-Z Steel Rear Sprocket:
- The evolution of the exclusive Sunstar Z sprocket, now made from the highest quality stainless steel.
- Weighs up to 50% lighter than standard steel sprockets.
- 100% heat treated AND even lighter than before with new weight reduction cut outs, but still has a hardness 5 times that of an aluminum sprocket and twice that of a standard steel sprocket.
- Up to 4 times more durable with 1.2 times the lateral strength of any aluminum sprocket.
- Great self cleaning capabilities due to the offset tooth design, same as the original Z Sprocket, which extends the life of the entire chain drive system.
- The lightest steel sprocket available on the market.
Your Choice of Drive Chain:
| Chain | Chain Type | Avg. Tensile Strength | Maximum Rated Displacement | Weight (pounds per 100 links) | Master Link Type |
|---|
| D.I.D 520 DZ2 Chain |
Non-sealed (standard) |
7,870 pounds |
450cc |
3.08 |
Clip |
| D.I.D 520 ERT2 Chain |
Non-sealed (standard) |
8,100 pounds |
450cc |
2.99 |
Clip |
| D.I.D 520 VX2 X-Ring Chain |
X-ring |
8,210 pounds |
750cc |
3.35 |
Clip |
| D.I.D 520 ERT3 Racing Chain |
Non-sealed (standard) |
8,300 pounds |
450cc |
2.99 |
Clip |
| D.I.D 520 ATV2 X-Ring Chain |
X-ring |
8,430 pounds |
750cc |
3.42 |
Clip |
| D.I.D 520 ERV3 X-Ring Chain |
X-ring |
8,650 pounds |
750cc |
3.30 |
Rivet |
| Renthal 520 R1 Race Chain |
Non-sealed (standard) |
7,644 pounds |
450cc |
2.13 |
Clip |
| Renthal 520 R3 O-Ring Chain |
O-ring |
7,644 pounds |
500cc |
3.36 |
Clip |
| Sunstar 520 MXR1 Works MX Racing Chain |
Non-sealed (standard) |
9,000 pounds |
500cc |
2.99 |
Clip |
| Sunstar 520 XTG TripleGuard Sealed ATV & Offroad Chain |
TG-ring |
8,500 pounds |
750cc |
3.36 |
Clip |
Notes on Manufacturer Chain Type:
- TG-ring - Sunstar proprietary X-ring design. TripleGuard sealed ring technology where there are 3 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.
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.
Note:
Image is for reference ONLY, actual product will vary based on fitment and selection.
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.
D.I.D 520 DZ2 Chain:
The All New D.I.D 520DZ2 is the best value in a lightweight, high-performance chain designed for motocross racing.
- Great value in a lightweight chain.
- Designed for off-road riding and motocross.
- The DZ2 has twice the lifespan of the previous DZ.
- SDH pin treatment - hard chromium-carbide layer formed on pin surface for exceptional strength and wear resistance.
- Flexible inner soft core absorbs shock.
- For entry level motocross, trial riding at an affordable price.
- Average tensile strength of 7,870 pounds.
- Wear life index: 410.
- Rated for up to a 450cc motocross bike.
- Weight (per 100 links): 3.08 pounds.
- Includes a clip-style master link.
- Notes: DZ and DZ2 Connecting Links are not interchangeable. Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.
D.I.D's exclusive SDH (Super DH) pin treatment is the secret behind the superior performance of the DZ Series chains. This high-tech pin treatment forms an extremely hard chromium carbide layer on the pin's surface while maintaining a soft inner core. SDH treated pins have extreme impact strength while maintaining outstanding shock absorption. This treatment creates a chain with anti-oxidation properties and superior wear resistance against invasion of hard foreign materials.
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D.I.D 520 ERT2 Chain:
The D.I.D ERT2 chain is the most trusted chain in Supercross and motocross racing because of its reputation of meeting the high quality demands that are required when pushing the limits. It was designed with the intention of making a chain that is optimized for the purpose of racing. D.I.D beefed up the ERT2 chain by increasing the pin size by 3% to give the chain an average tensile strength of 8,100 pounds. Increasing the strength of the ERT2 chain did not come with a sacrifice of weight, in fact DID was able to shed 5% from the previous ERT chain.
- Exclusively designed for motorcycle racing.
- High-performance, lightweight and low friction chain.
- 3% bigger pin diameter and 5% lighter than former ERT.
- Provides the highest wear resistance, tensile strength and impact resistance.
- Average tensile strength of 8,100 pounds.
- Wear life index: 430.
- Rated for up to a 450cc motocross bike.
- Weight (per 100 links): 2.99 pounds.
- Includes a clip-style master link.
- Notes: ERT and ERT2 Connecting Links are not interchangeable. 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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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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D.I.D 520 ERT3 Racing Chain:
The best chain in motocross just got better, the D.I.D. ERT3 chain has been proven by the top teams in the world. With cutting edge technology and designed for the extreme conditions of racing, the D.I.D. ERT3 has 25% greater anti-shock performance and a 5% higher tensile strength over the previous generation chain without changing the weight of the chain. This means that the ERT3 is stronger without compromise while keeping the rotational mass to a minimum. Used and tested by professional motocross teams such as Factory KTM, Honda, Yamaha, Kawasaki and Suzuki, the D.I.D. ERT3 is the next level of chain performance. The gold coating also adds that level of factory look while giving the ERT3 excellent durability.
The D.I.D. ERT3 has SDH pin treatment that creates an extremely hard chromium carbide layer on the pin's surface while the inner core is maintained soft to absorb extreme shock loads.
The D.I.D. ERT3 uses solid bushing technology for high wear resistance. The cold-formed solid bushings have a smooth seamless surface with complete roundness, giving the chain exceptional wear life.
- Features gold color plates.
- 3% bigger pin diameter and 5% lighter than the former ERT.
- For 125 - 450cc Motocross applications.
- Average tensile strength of 8,300 pounds.
- Weight (per 100 links): 2.99 pounds.
- Includes a clip-style (RJ) master link.
- Notes: Optional rivet-style (ZJ) master link available. 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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D.I.D 520 ATV2 X-Ring Chain:
Sporting the same quality as all DID chains, the 520 ATV2 is a robust design with thicker plates for increased strength and heat dissipation. Perfect for hard-on-the-throttle quads. Don't worry about increased friction. With the "X" type sealing ring, friction is kept at bay with sealing surfaces that hold more lubrication in against the rollers and pins. With design like this, DID has made an ATV chain you'll adjust once and then keep on your bike for seasons to come.
- Available for non-ATV applications.
- Designed for ATV use.
- Thicker plates than standard increase strength.
- Low-friction X-ring sealing rings.
- Better sealing surfaces and lubricant retention.
- Average tensile strength of 8,430 pounds.
- Wear life index: 3250.
- Rated up to a maximum displacement of 750cc.
- Weight (per 100 links): 3.42 pounds.
- Includes a clip-style master link.
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D.I.D 520 ERV3 X-Ring Chain:
D.I.D is the number one motorcycle chain in the world. D.I.D chains are used by factory races teams from all manufacturers in race series everywhere.
The D.I.D ERV3 X-ring chain is the ultimate high-performance, lightweight, low-friction race chain available and is used extensively by many off-road race teams. The ERV3 X-ring chain utilizes D.I.D's patented X-ring technology which reduces friction by 50% over standard O-ring chains for minimized power loss. The pins on the ERV3 X-ring chain have been put through a patented heat-treatment process to produce a pin that is 1.5 times harder than conventional pins. The result is a chain that is significantly stronger and offers better wear resistance than many other chains on the market. D.I.D ERV3 X-ring chains feature a gold-plated finish that resists rust and adds a little style to your motorcycle or ATV.
- Exclusively designed for motorcycle racing.
- High performance, lightweight and low friction chain provides the winning edge in World Class competition.
- Features gold color plates.
- Average tensile strength of 8,650 pounds.
- Wear life index: 3100.
- For 250 - 750cc Rally, 750cc Superbike and 250 - 750cc Endurance applications.
- Weight (per 100 links): 3.30 pounds.
- Includes a rivet-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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Renthal 520 R1 Race Chain:
Renthal's R1 Works Chain is a high-strength non O-ring chain with excellent impact load resistance designed specifically to withstand the stress found in off-road applications. This chain is the choice where a combination of high strength, light weight and maximum power transfer are important considerations.
- Shot-peened alloy steel side plates for high tensile strength and maximum impact load resistance.
- Chamfered inner links to reduce the chance of chain derailment.
- Extended bushings to reduce friction between outer and inner link plates, maximizing power output.
- Chromized bearing pins for excellent resistance to wear.
- Gold color side plates help prevent corrosion.
- Most perfectly matched chain for Renthal sprockets allowing maximum power at the rear wheel. This also extends the life of both the chain and sprockets.
- Average tensile strength of 7,644 pounds.
- Wear life index: 300.
- Maximum displacement (2-stroke / 4-stroke / Trials): 250cc / 450cc / 400cc.
- Weight (per 100 links): 2.13 pounds.
- Each chain includes master link and a pair of latex gloves for mess free installation.
- 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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Renthal 520 R3 O-Ring Chain:
Renthal's R3-2 O-ring Chain is a high-strength sealed-ring chain with excellent impact load resistance designed specifically to withstand the stress found in off-road applications where an O-ring chain is desired. This chain is the choice where a combination of high strength, light weight and maximum power transfer are important considerations. The O-rings help extend chain life by retaining the special vacuum-injected grease near the critical pin area. Chain comes pre-stretched to shorten break-in period.
- Nitrile O-rings extend chain life by retaining special vacuum-injected grease inside the chain joint.
- Shot-peened alloy steel side plates for high tensile strength and maximum impact load resistance.
- High-carbon alloy steel bearing pins for excellent resistance to wear.
- Gold colored side plates help prevent corrosion.
- Pre-stretched to enhance performance of the chain.
- Available in 520 pitch only.
- Average tensile strength of 7,644 pounds.
- Wear life index: 750.
- Maximum displacement (street / off-road): N/A / 500cc.
- Weight (per 100 links): 3.36 pounds.
- Each chain includes a pair of latex gloves for mess free installation.
- Note: The Renthal R3-2 chain is supplied with both an easy-fit split master link and a superior solid-pin rivet master link which matches the durability of the chain.
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Sunstar 520 MXR1 Works MX Racing Chain:
Sunstar's MXR1 Works MX / SX / Off-Road race chain (MXR = Motocross Xtreme Racing) is a premium quality, highly durable non-sealed chain specifically designed for Motocross, Supercross and/or off-road racing. Featuring Sunstar's oversized TripleStar treated ultra hard pins and 100% heat treated components, the MXR1 chain is constructed to handle the demands of the highest levels of racing. This is also one of the lightest MX chains on the market thanks to its superlight design - the 520MXR1 120 link version weighs less than 3.6 pounds, yet is super strong with an 8,970-pound tensile strength rating. Its combination of strength, durability and light weight make it the top choice for serious racers.
- Deep gold side plates and gold inner plates.
- Super strong and lightweight design for high performance / racing mini off-road and motocross machines.
- Utilizes TST (TripleStar Treated) ultra-hard pins and 100% heat treated components for high strength and durability.
- Seamless rollers and bushings help provide the added life and durability.
- Average tensile strength of 9,000 pounds.
- Maximum rated displacement (street / off-road): N/A / 500cc.
- Weight (per 100 links): 2.99 pounds.
- 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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Sunstar 520 XTG Tripleguard Sealed ATV & Off-road Chain:
An excellent choice for the most extreme off-road conditions encountered in ATV and/or off-road motorcycle racing, Sunstar's premier sealed Works level chain is the 520XTG (XTG = Xtreme Triple Guard). It features Sunstar's TripleGuard sealed ring technology meaning there are three sealing lips and lubrication pools per side of the ring versus a single sided lip that is typical of standard O-rings. This design effectively protects the critical areas of the chain from mud, sand, dirt and the harsh conditions encountered in off-road racing (hence the name Xtreme for extreme conditions) and the chain stays well lubricated for a long duration of use. The XTG is perfect for all ATV's and off-road motorcycles 750cc or less. All components are 100% heat treated and its tensile strength is rated at 8,460 pounds. It's offered in pre-cut lengths and uses a press fit, clip-type connecting link in the gold color option (gold outer plates / natural inners).
- Top of the line ATV and off-road racing chain.
- Features exclusive TG (TripleGuard) sealed-ring technology to guard the chain from sand or dirt entering and causing wear.
- Built specifically for handling the most extreme conditions encountered in ATV and off-road motorcycle racing.
- TG-ring design prevents the loss of lubricant and is deigned to perform in any extreme heat or other course conditions.
- Available only in Gold (gold outer plates / natural inners) finish.
- Average tensile strength of 8,500 pounds.
- Maximum rated displacement (street / off-road): 400cc / 750cc.
- Weight (per 100 links): 3.36 pounds.
- Includes press fit clip-style master link.
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