The TM Designworks Factory Edition #2 Chain Guide design is our strongest rear chain guide. Replaceable wear pad in 2 compounds and each kit comes with new hardware. Chain Guide body is made by using our exclusive dirt bike Return memory plastic. Our guide accepts 2-3 over sprockets and fits any size 520 O-ring chain. 20 straight years of championship titles have proven if...

The inventor and worldwide patent holder of the first solid body plastic chain guide system. The Factory Edition #1 Rear Guide is a solid body design, with long lasting non replaceable wear pad. Called by Dirt Bike Magazine "The Superman of all chain guides" over the past 20 years. Exclusive Plastic formula “RMS” (Return Memory System) is so guide returns to center on impact.<br...

Why Supersprox Counter Shaft Fully lightened with radial holes. Ultra-hard surface layer reduces friction to prevent power-loss caused by chain drag. Grooved teeth maximize sprocket life by preventing dirt build-up. Made from SCM-435 Carbon Free steel and carbon impregnated. Made in Europe The refined core structure ensures that the teeth will not break when worn,...

Rear chain guide standard - Suitable for 2002/2021 CRF250R / CRF250RX and 2002/2021 CRF450R / CRF450RX