RK Chain Mru420-130 U-Ring Chain - BL420MRU-130

Lightweight, low friction, sealed, U-Ring 420 pitch chain perfect for Honda® Monkey and Honda® Grom.

MRU features RK’s proprietary Ultra Thin Seal, U-Rings, where the thickness of the seal is less than 50% of the most common O-ring seal. This allows RK to design a Sealed Chain with the weight of a Non-Sealed Chain. MRU will feature 4 times longer chain life than comparable non-sealed 420 chains and will require less chain adjustments compared to non-sealed 420 chains. MRU is available in RK’s Black Scale finish with black inner and black outer sideplates with gold pins and gold rollers.

RK 420MRU specifications

• Tensile Strength: 4,540 lbs
• Max CC Rating: 150cc Street
• Max Horsepower: 35 HP
• Weight: 1.74 lbs
• Max Chain Width: 17.1mm
• Master Link Included: Clip type

This allowed RK to design a sealed chain with the same weight as a non-sealed chain.