The RK MRU U-Ring Chain features a proprietary ultra-thin seal (U-Rings) where the thickness of the seal is less than 50% of the most common O-ring seal. This allowed RK to design a sealed chain with the same weight as a non-sealed chain. The MRU features a chain life over four times longer than comparable non-sealed 420 chains while also requiring less chain adjustments.

• Sealed, lightweight performance chain is perfect for the Honda Monkey and Grom Clip type master link included
• Street/Offroad Rated for 25hp
• 4,540 lbs Tensile Strength
• 150cc Max CC Rating