MRU Chain

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.
 



RK EUROPE / 420MRU
420MRU U-RING CHAIN
  • Tensile Strength: 22.2kN
  • Application: 50cc / 150cc
  • Master Link Included: Clip type
  • Weight: 0.79Kg/100L
RK EUROPE / 420mruRK EUROPE / gb420mruRK EUROPE / bl420mru

You may be intrested by:

420SB seal420MS seal420MRU seal
420SB420MS420MRU
Tensile Strength18,5 Kn18,7 Kn22,2 Kn
Application Cyl.50cc / 125cc50cc / 125cc50cc / 150cc
Master Link IncludedClip typeClip typeClip type
Weight/100L0,75 Kg0,78 Kg0,79 Kg
ApplicationOFF ROAD / ON ROADOFF ROAD / ON ROADSTREET RIDING - DAILY USE
Seal TypeNON-SEAL sealNON-SEAL sealU-RING seal
RK EUROPE / GB428MRU2
428MRU2 U-RING CHAIN
  • Tensile Strength: 27.0kN
  • Application: 50cc / 250cc
  • Master Link Included: Clip type
  • Weight: 1Kg/100L
RK EUROPE / GB520MRU
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



RK EUROPE - MADE IN JAPAN CHAIN

Main point

  • For Daily Use 
  • RK U / RK UW Seal Ring
  • 4 times longer chain life compare to standard chain
  • Efficient horsepower transmission