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2004 KTM 525MXC

Vortex Chain & Sprocket Kit

Retail: $145.97
$114.99
OEM Stock Sizes for a 2004 KTM 525MXC
Chain Type: 520 Chain Length: 118
Front Sprocket: 15 Rear Sprocket: 45
For reference only. Please verify with owners manual.
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FITS: 2004 KTM 525MXC change
 
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Product Description

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

Sprockets / Chainwheels Included:

For more than 15 years, U.S.-based Vortex Racing continues to manufacture, market and sell top-quality motorcycle racing components for Motocross, Supercross, Road Racing, Flat Track Racing and Minibikes. Owned and operated by motorcycle racers and enthusiasts, they focus on absolute quality. Each of their race components is made to the tightest tolerances with the best quality materials in the industry. Vortex tests on the track with direct feedback from top professional race teams worldwide. Vortex parts have been put to the test by some of the world's most respected champions and teams.

Vortex Front Steel Sprocket 520:

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

Vortex Rear Aluminum Sprocket 520:

  • 100% CNC machined with saber tooth grooves.
  • Vortex patent pending design.
  • Available in a variety of colors or PTFE black hardcoat, which bonds to the aluminum to create a more durable surface with less friction.
  • 7075 T6 billet aluminum, lightweight for less rotating mass.
  • Improved acceleration, deceleration and directional changes.

Your Choice of Drive Chain:

D.I.D 520 Standard Chain - 120 Links:

The D.I.D Standard Non-O-Ring Chain is designed for low horsepower, smaller displacement mopeds, scooters and vintage motorcycles.

  • For machines originally equipped with non-O-ring chains.
  • Solid rollers.
  • Shot-peened parts.
  • High cylindrical and roundness accuracy.
  • Exacting tolerances provide low friction.
  • Pre-stretched.
  • Special alloy steel with extended riveted bushing "anti-kink" design.
  • Highest quality non-O-ring chain in overall combined performance.
  • Average tensile strength of 7,200 pounds.
  • Wear life index: 100.
  • Includes a clip-style master link.
  • 120 links.
  • Note: 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 520 NZ Heavy Duty Chain - 120 Links:

Pinning your bike out of every turn might tear apart the stock chain, but D.I.D and their 520NZ chain will not let you, or your race for first, down.

  • For machines originally equipped with non-O-ring chains.
  • Solid rollers.
  • Shot-peened parts.
  • High cylindrical and roundness accuracy.
  • Exacting tolerances provide low friction.
  • DHA pin treatment - hard chromium-carbide layer formed on pin surface for exceptional strength and wear resistance.
  • Pre-stretched.
  • Special alloy steel with extended riveted bushing "anti-kink" design.
  • Highest quality non-O-ring chain in overall combined performance.
  • Up to 19% higher tensile strength; average tensile strength of 8,220 pounds.
  • Wear life index: 410.
  • Rated for up to a 250cc bike.
  • Weight (per 100 links): 3.54 pounds.
  • Includes a clip-style master link.
  • 120 links.
  • Note: 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 520 DZ2 Chain - 120 Links:

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.
  • Gold finish, 120 links.
  • 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 520 ERT2 Gold Chain - 120 Links:

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.
  • 120 links.
  • 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.

D.I.D 520 ERV3 X-Ring Chain - 120 Links:

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.
  • 120 links.

D.I.D 520 VX2 X-Ring Black Chain - 120 Links:

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.
  • 120 links.

D.I.D 520 VX2 X-Ring Gold and Black Chain - 120 Links:

  • 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.
  • 120 links.

Renthal 520 R1 Gold Race Chain - 120 Links:

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 (street / off-road): N/A / 500cc.
  • Weight (per 100 links): 2.13 pounds.
  • Each chain includes master link and a pair of latex gloves for mess free installation.
  • 120 links.
  • Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

Renthal 520 R3 O-Ring Chain - 120 Links:

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.
  • 120 links.
  • 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.

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.

  • Customer Reviews
  • Ask an Expert
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1-10 of 29
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Don't stick your finger between the sprocket and the chain.

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Cool Looking Product!

Haven't gotten to test the durability very much but they look awesome, and was easy to installl.

Vortex Chain & Sprocket Kit
Overall
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Location: Honolulu, HI, USA
First vortex sprocket

Very good kit!!!! Sprocket lastest long looks awsome and hold up very well on my 07 crf450.. motosport is the best very easy to order from the people are always friendly i receive all my orders within a couple days and i live in hawaii motosport is the best out there!!

Vortex Chain & Sprocket Kit
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Durability
Ease of Installation
Performance
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Verified Purchaser
Location: Leander, TX, USA
Great value and price!

Looks great and is holding up great!

Overall
Durability
Ease of Installation
Performance
Style
Location: Vista, CA
Couldnt be better

I've always ran Vortex Sprockets and D.I.D Chains. When I blew out my hub and replaced the rear wheel I figured I might as well replace the drive with a complete kit. If my blown hub didn't bend my old sprocket i would still be riding on it today since it is so durable and it looks rather flashy too. Upgraded from heavy duty chain to ERT2 Gold chain and looks fantastic and cant wait to see how it holds up in the desert. Bike looks factory now! (Well rear end at least...)

New Drive all bolted on
Overall
Durability
Ease of Installation
Performance
Style
Verified Purchaser

Great

Overall
Durability
Ease of Installation
Performance
Style
Location: Tampa, Fl
Best sprocket and Chain Combo!

Vortex sprockets are the premiere sprockets in the Moto industry. With its flashy style, and durability second to none, they are a fantastic buy. Personally, I like them better than renthal. The DID ERT2 Gold chain is also a fantastic chain, with great durability, and the Gold looks really cool. The best Combo you can buy, with a great pricetag! Here is a picture after my install on my 2011 KX 250F. So far has lasted better than any other combo.

Vortex Chain & Sprocket Kit
Overall
Durability
Ease of Installation
Performance
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Top 500 Contributor Verified Purchaser
Location: Milton FL
Nice Set

This set worked and fit well on a 2006 YZ250F.

Overall
Durability
Ease of Installation
Performance
Style
Top 1000 Contributor
Great Sprocket and Chain

This sprocket is Awesome!! Great styling and durability. I put it on my Kx250f with the DID X Ring chain and I love it.

Overall
Durability
Ease of Installation
Performance
Style
Verified Purchaser Top 250 Contributor
Location: Pittsburgh PA
I Like Them

they have held up well so far. the only complaint is the colors are a little off. the red is more of a maroon and the blue is like a sky blue.

1-10 of 29
Total Questions (6)
Questions with answers:
  6
Questions without answers:
0
mike450sxf Location: St. Pauls, NC 28384, USA
Snake Location: Winters CA
Snake Location: Winters CA
1-6 of 6
MXDad 1 month ago Location: Indiana
Are all the black sprocket options PTFE hardcoat?
The picture looks like the CAT5 sprocket.
MotoSport Staff Expert
29 days ago Location: Portland, OR, USA
Yes, the Black Vortex Sprockets are all coated with PTFE black hardcoat, the image online is for really just for reference but the actualy black Vortex Rear Sprockets in the kit have the same design machined into them but are completely black.
mike450sxf 1 year 1 month ago Location: St. Pauls, NC 28384, USA
What size chain "j" goes on a 2009 ktm 450 sxf?
MotoSport Staff
1 year 1 month ago Location: Portland, OR, USA
The kit will come with a 520 chain, which is what you need. The lengths are a standard 120 link- which will need to be fit to your particular application.
Snake Over 4 years ago Location: Winters CA
I put the front sprocket on?
and all i have is the stock washer for the bolt and its alot bigger than the sleeve on the sprocket do i have to order a different washer for this lightwight sprocket or whats going on
MotoSport Staff Expert
Over 4 years ago Location: Portland, OR
This sprocket should be a direct OEM replacement. No additional washers are required. Please contact our Sales Team if you are still encountering problems - 1-888-676-8853
Snake Over 4 years ago Location: Winters CA
520 what chains are non o ring?
MotoSport Staff Expert
Over 4 years ago Location: Portland, OR
From the listing of available chains for this kit a non-oring chain would be the: DID ERT2 Renthal R1 Regina RX3 TSUBAKI MX-QRB Turner MX-R
Snake Over 4 years ago Location: Winters CA
Hello i asked you which chains are non o ring chains?
Expert MotoSport Staff
Over 4 years ago Location: Portland, OR
What size chain are you referring to? 420, 428,520, 525, or 530. depending on the type of chain I can tell you which are non orings.
Marksk Over 5 years ago
Color of the DID O-Ring/120 LINKS?
Is the DID O-Ring/120 LINKS that can be selected gold colored?
MotoSport Staff Expert
Over 5 years ago
no, its a standard o-ring chain. To get the Gold O-ring you can upgrade the combo kit with the Renthal R3 O-ring.
1-6 of 6

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