Important Notice! Please use a genuine sprocket from a major motorcycle maker or equivalent device/above product in terms of its strength, material, and precision when RK drive chain is used. Special tool and expertise are needed when changing the chain. Please ask a motorcycle shop for changing the chain. We do not guarantee for any trouble if above requirement is not fulfilled. CHOOSE YOUR CHAIN BY…
Caution Every chain has life span. We recommend that you check the chain elongation before each race/practice. (O-ring and Non Sealed chains) Please do not use Gasoline, Kerosene for cleaning the chains. It may damage the O-ring (seal) and shorten the life span. Special O-Ring sealed chain GB215KRO GB215KRO (Gold) is approx 20% lighter than RK 219KRO series (subject to the nearest gear ratio), with a 7.0mm pitch making Roundness of Rotation closer to the true circle, which improves the power transmission efficiency with less friction. It expands the option to have a more precise gear ratio, which is one of the secrets of today`s Champions. O-Ring sealed chain BB219KRO …
UCT2100(50) Chain Cutting & Press-Fit Tool Quickly and easily breaks 40 & 50 type chain. Easily press-fits tight tolerance 40, 50 seal-ring chain sideplates to the correct depth for clip or rivet link installation. Flares RK’s special rivet pin hole rivet links. The new press fit holder plate features a reversible post to switch between clip plate and rivet plate. The redesigned Rivet Flare Pin now features a flare guard to prevent over riveting. Note Tool is not able to rivet 420/428 type chains without (FP428JP & PH428) *sold separately. UCT2100(50) Instruction Video
Steel Front,Steel & Aluminium Rear Sprockets FRONT SPROCKETS STANDARD Chrome moly steeel for durability. Used as original equipment by many motorcycle manufactures. RACING Lightening holes reduce weight Stronger steel improves performance REAR STEEL SPROCKETS C45 High Carbon steel! The only manufacture in the world to produce all sprokets with heat treated teeth. (Induction Harding) REAR ALLOY SPROCKETS STANDARD European aircraft aluminium alloy 7075-T6 Japanese technology Silver anodized RACING Same features as standard Hard anodizing and colors Designed for light weight and high performance Mud-grooves for MX use All CNC machined
Evolution of RK’s sealed ring chain RK’s sealed-ring chains received the spotlight back in 1977 during 24 hour endurance racing. It was common for riders to change their non-sealed chains at least three times during the race. However, racers riding with RK’s sealed chains achieved the win with only one chain! Why should I choose an RK’s sealed ring chain? Lasts longer Improved drive chain life Absorbs torque and improves acceleration RK’s sealed-ring chains offer less torsional friction and increased high-stress, high-speed performance. From the beginning of a race to the end, RK’s sealed-ring chains deliver more consistent horsepower to the ground than non-sealed chains. The nitrile butadiene seals ensure …
