Find your Renthal 520 R3-2 O-Ring Chain at Motorcycle Superstore: http://www.motorcycle-superstore.com/2/9/185/5478/ITEM/Renthal-520-R3-2-O-Ring-Chain.aspx?SiteID=SMPR_YT_VD_08_16_Rnthl520r32ORngChn&WT.mc_ID=14004
Renthal's gold R3-2 O-ring chain has been upgraded with a host of improvements to offer a stronger, longer lasting chain
Features 10% increase in chain wear life
15% greater shock-pin resistance and roller-fatigue strength
7% greater overall fatigue strength
Weight is the same as the original R3 chain
Average tensile strength is now 7,644 lbs.
Nitrile O-rings which retain a special vacuum-injected grease around the pin and bushing area
High-carbon alloy steel pins, solid bushings and rollers, and shot peening of plates and rollers for increased fatigue resistance
Also at Motorcycle Superstore is the Renthal 420 Ultralight Off-Road Rear Sprocket: http://www.motorcycle-superstore.com/2/10/211/14276/DPITEM/Dirt-Bike-Motocross-Rear-Drive-Sprockets-Renthal-420-Ultralight-Off-Road-Rear-Sprocket.aspx?SiteID=SMPR_YT_VD_08_16_Rnthl420offRdRrSprkt&WT.mc_ID=14004
Renthal Ultralight rear chainwheels are manufactured to extremely tight tolerances from a special material developed to withstand the rigors of supercross, motocross and enduro racing.
The 7075 T6 aluminum alloy rear chainwheels are 66% lighter than steel, yet incredibly durable. Their advanced tooth profile, concentricity and accuracy of fit provide maximum power transfer and long-life.
Renthal's combination of a very high strength base material and an exceptionally hardwearing surface result in significantly increased chainwheel life over other brands.
You'll find all your aftermarket dirt bike parts and accessories at Motorcycle-Superstore.com!
http://www.motorcycle-superstore.com/2/10/PARTS/Dirt-Bike-Motocross-Parts.aspx?SiteID=SMPR_YT_VD_08_16_DrtPrtsPg&WT.mc_ID=14004