Our Baja Systems feature 1 1/2″ tubing and provide excellent ground clearance and increased horsepower. Available with Quiet Muffler or Stinger and for use with or without heater. All are Large 3 Bolt Flange and come complete with hardware. Systems with heater include aluminum flex hose. Fits 1300- 1600cc. Systems without heater require the use of J-Tubes. Systems that eliminate heater boxes bolt directly to heads.