For a limited time, purchase the Sunstar Chain & Works Z Sprocket Combo and you will receive a FREE* Sunstar T-Shirt!
* While supplies last.
The MotoSport.com Sunstar Chain & Works Z Sprocket Combo includes ONE Sunstar Countershaft (Front) Sprocket, ONE Sunstar Works-Z Rear Sprocket, and your choice of ONE Premium Sunstar 520 Drive Chain, each with the following features:
Sprockets / Chainwheels Included:
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 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.
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.
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 may vary based on fitment and selection.
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 8,970 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.
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 3 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 8,460 pounds.
Maximum rated displacement (street / off-road): 400cc / 750cc.