The MotoSport.com Vortex 420 Aluminum Sprocket And Chain Kit includes ONE Steel Countershaft (Front) Sprocket, ONE Aluminum Rear Sprocket, and your choice of ONE Premium 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:
- Made of the highest quality steel.
- Case hardened.
- Drilled lightening holes on most applications.
Vortex Aluminum Rear Sprocket:
- 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:
| Chain | Chain Type | Avg. Tensile Strength | Maximum Rated Displacement | Weight (pounds per 100 links) | Master Link Type |
|---|
| D.I.D 420V O-Ring Chain |
O-Ring |
3,560 pounds |
250cc |
1.60 |
Clip (RJ) |
| RK 420 MXZ Chain |
Non-sealed (standard) |
5,000 pounds |
150cc |
N/A |
Clip |
Note for installing O-ring chains:
As O-ring chains are wider than standard roller chains, when fitting an O-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 420V O-Ring Chain:
D.I.D's top quality O-Ring chains are quad stake riveted with solid bushings for superior strength and long life.
- High-performance value of an O-ring chain.
- Average tensile strength of 3,560 pounds.
- Wear life index: 700.
- Ideal for offroad motorcycles up to 250cc.
- Weight (per 100 links): 1.60 pounds.
- Includes a clip-style (RJ) master link.
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RK 420 MXZ Chain:
High-quality pins, bushings and rollers for maximum durability.
- All pins are four-point riveted.
- Longer wear life than RK standard chain.
- Maximum tensile strength of 5,000 pounds.
- Suitable for 150cc maximum street displacement or 125cc maximum off-road use.
- Includes clip 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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