Big Bore Kit

Piston Size > 52mm

  • 50 Caliber Racing Stage 1 88cc Big Bore Kit For Honda Z50a Monkey Bike Mini
  • 50 Caliber Racing 88cc Vintage Big Bore Kit Withrace Head For Z50 Mini Trail 68-78
  • 88cc Vintage Big Bore Kit With Race Head For Honda Ct70 Atc70 Sl70 Xl70 Trx70
  • 50 Caliber Racing 88cc Pit Bike Stage 1 Big Bore Kit For Honda Z50 Xr50 Crf50
  • 50 Caliber Racing 88cc Vintage Big Bore Kit Withrace Head For Z50 Mini Trail 68-78
  • Stage 1 Vintage 88cc Big Bore Kit Honda Z50 Monkey Mini Trail Pit Bike K0-1978
  • 50 Caliber Racing Stage 1 Vintage 88cc Big Bore Kit Honda Ct70 Sl70 Atc70 Trx70
  • 50 Caliber Racing Big Bore & Race Head Kit Honda Xr50 Crf50 Crf70 Xr70 (2000+)
  • Vintage 88cc Race Head Big Bore Kit Honda Ct70 Atc70 Sl70 Xl70 Trx70 Mini Trail
  • 50 Caliber Racing Big Bore 88cc Race Head Kit Vintage Z50 Mini Trail 1968-1978
  • Big Bore & Race Head Kit Honda Xr50 Crf50 Crf70 Xr70 Dirt Pit Bike 2000-present
  • 50 Caliber Racing Stage 2 Vintage 88cc Big Bore Kit Honda Ct70 Sl70 Atc70 Trx70
  • 50 Caliber Racing 88cc Pit Bike Stage 1 Big Bore Kit For Honda Z50 Xr50 Crf50
  • Vintage Stage 2 88cc Big Bore Kit Honda Monkey Z50 Mini Trail Pit Bike K0-78
  • 50 Caliber Racing Stage 2 Vintage 88cc Big Bore Kit Honda Ct70 Sl70 Atc70 Trx70
  • 50 Caliber Racing Stage 1 Vintage 88cc Big Bore Kit Honda Ct70 Sl70 Atc70 Trx70
  • 88cc Stage 1 Big Bore Top End Kit Honda Z50r Xr50 Crf50 Pit Bikes 1992 2021
  • Vintage 88cc Race Head Big Bore Kit Honda Ct70 Atc70 Sl70 Xl70 Trx70 Mini Trail