RK Racing BL420MRU 420 Ultra Thin U-Ring Sealed Chain (120 Link) Chain Lube ✅ Full-wave charging systems

✅ Full-wave charging systems

With multiple size ranges available

The studded surface replaces the stock rubber setup

Loud & Reliable Horn

RK Racing BL420MRU 420 Ultra Thin U-Ring Sealed Chain (120 Link) Chain Lube ✅ Full-wave charging systemsMRU chains utilize RK's proprietary Ultra Thin Seal U Rings which allows the thickness of the seal to be less than 50% of the most common O ring seal MRU features 4 times longer chain life and will require less chain adjustments than comparable non sealed 420 chains Lightweight, low friction, sealed, U Ring 420 pitch chain Great option for up to 212CC 420 sprocket motors Typical chain lengths for CT70 +2" Swingarm CT70 Champion 94 Links Standard