RENTHAL - 428 R1 WORKS - NON SEALED MOTOCROSS CHAINDesigned for high powered mini racing machines up to 100cc capacity that use 428 non O ring chain Shot peened alloy steel side plates Extended bushings to reduce friction between outer and inner link plates, plates, which maximizes power transmission Ultra high 4,948 pound tensile strength Case hardened alloy steel bearing pins for maximum resistance to wear Gold coloured side plates; copper coloured rollers Most perfectly matched chain for Renthal

Both 420 and 428MXZ Racing Chains are the strongest in their class giving you the best value-performance rating of any MX Racing Chain in the world today

The Muc-Off Chain Brush is an essential tool for keeping your motorcycle chain spotless and in good condition

24-26 YZ250F

accommodating bikes with up to 250cc of power

and thus changes to or from Yamaha will require purchase of an entirely new ECU)

brake fluid and dirt

The result

With well over 35 years of racing experience behind it

Available in 5 US Gal Pail & 55 US Gal Drum on request

Shear-stable formula provides superior protection from wear

Don't want to move it to accommodate a heat exchanger

this is the hardest core of hard core