S&S Cycle Big Bore Forged Piston Kit - 98" Twin Cam - Standard 920-0101

Significantly increase performanceProvides more horsepower without sacrificing torque10.6:1 compression ratioSimple EFI tuning with three calibration downloads for Dynojet® Power Vision® tuner

The Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split existing cases, just swap the cylindersCylinders are constructed from premium aluminum...

The Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split existing cases, just swap the cylindersCylinders are constructed from premium aluminum...

Complete kits include cylinder sleeves, pistons and head gasket750cc kit increase bore and stroke to 83.5mm x 67.8mm (stock is 78 mm x 67.8 mm)865cc Increases bore and stroke to 90 mm x 67.8 mm...