Premium Replacement for Non-sealed Chain !
RK 420MRU and 428MRU2 chains are designed to be the Premium Replacement for OE Non-sealed Chain, featuring RK`s only technology of Ultra-Thin Seal, U Ring, make possible to design a Sealed Chain with the width of a Non-Sealed Chain.
RK 420MRU and 428MRU2 are an long lasting solution for daily business use vehicle or commute motorcycle.
RK 520MRU is the Lightest Multipurpose Sealed Chain specially designed for ~450cc, applicable to both Street Usage, securing 15,000[km] of chain life, and Track Usage, featuring high performance for the best lap time.
RK 520MRU features RK’s only technology of Ultra-Thin Seal, UW-Rings, minimizing the chain weight and friction loss possible.
Also, by narrowing the application from 125cc~450cc, each chain components are shaped up to its limit, making RK 520MRU as light as 13.8g/link, 10% lighter compare to RK 520XSO.
Converting Non-Sealed to a Sealed Chain result at least 4 times chain life and minimum chain adjustment after initial stretch, while ensuring high efficient horsepower transmission from the engine to the rear wheel throughout the chain life.
420MRU U-RING CHAIN
- Tensile Strength: 22.2kN
- Application: 50cc / 150cc
- Master Link Included: Clip type
- Weight: 0.79Kg/100L
428MRU2 U-RING CHAIN
- Tensile Strength: 27.0kN
- Application: 50cc / 250cc
- Master Link Included: Clip type
- Weight: 1Kg/100L
520MRU UW-RING CHAIN
- Tensile Strength: 35.6kN
- Application: 125cc / 450cc
- Master Link Included: Rivet type
- Weight: 1.38Kg/100L
Available in 420/428/520
Main point
- For Daily Use
- RK U / RK UW Seal Ring
- 4 times longer chain life compare to standard chain
- Efficient horsepower transmission