KRC single belt serpentine, water pump only, drive kits are available in 1-to-1, 15% and 30% water pump reduction, for most Chevrolet and Ford engines. Each kit includes a water pump pulley, R-LOK crank adapter and pulley, idler-tensioner bracket, appropriate hardware and spacers and a set of detailed instructions. On Chevrolet's, if your engines has a MSD crank trigger and wheel, KRC 40400390 is required.

KRC Single Belt Serpentine Kits with Alternator
KRC's Single Belt Serpentine drive kits are now available with a 138mm Denso alternator bracket. This alternator bracket is solid and can handle any dirt track. Plus you never have to worry about charging your battery between heats and your engine will receive constant voltage through the entire race. This will keep your spark plugs hot, resulting in no drop off in power.

Why is an idler-tensioner necessary? Click here to find out.