At DMG Motorsports, we present the RK EXCEL BL420MRU Drive Chain — a lightweight sealed chain designed to deliver the weight of a non-sealed chain with the extended-life advantages of RK’s proprietary Ultra Thin Seal U-Rings. Built for 420 applications, the BL420MRU-130 includes a clip-type master link and is rated for up to 150cc and 25 HP.

Features:

• RK proprietary Ultra Thin Seal U-Rings
• Seal thickness is less than 50% of the most common O-ring seal
• Designed to provide the weight of a non-sealed chain
• Up to 4 times longer chain life than comparable non-sealed 420 chains
• Requires fewer chain adjustments compared to non-sealed 420 chains
• Tensile strength: 4,540 lbs
• Maximum rating: 150cc street and 150cc off-road
• Maximum horsepower: 25 HP
• Weight: 1.74 lbs
• Maximum chain width: 17.1mm
• Clip-type master link included
• Chain size and length: 420 x 130