84mm BILLET BIG BORE KIT | Keng Engine

84mm BILLET BIG BORE KIT

kit set HONDA CB300F HONDA CBR250R HONDA CBR300R HONDA CL300 HONDA CRF250 Rally HONDA CRF250L HONDA CRF300 Rally HONDA CRF300L HONDA Rebel 300

Includes

  • 84mm Billet Cylinder
  • 84mm Forged Piston
  • 17mm Wrist Pin
  • Piston Ring Set
  • Wrist Pin
  • Circlips
  • Cylinder Base Gasket
  • Cylinder Head Gasket

Detail

  • CNC-machined billet cylinder for superior strength and durability
  • Compatible with Honda 250cc and 300cc single-cylinder engines
  • Supports multiple compression ratio options depending on customer requirements
  • Excellent cooling performance for long-distance and off-road use
  • Suitable for daily riding, adventure touring, enduro, and racing applications
  • Direct fit for Honda CRF, CBR, CB, CL and Rebel 250/300 engine platforms

Available Compression Ratio Options

Dished Piston (Recommended for Adventure & Long Distance Use)

  • 84mm – Compression Ratio approximately 12.9:1

Flat Top Piston (Balanced Performance)

  • 84mm – Compression Ratio approximately 13.8:1

High Dome Piston (Race Use)

  • 84mm – Compression Ratio approximately 14.9:1

Customers can choose the compression ratio that best suits their fuel quality, riding style, and performance goals.

Displacement Options

  • CRF250L / CBR250R (55mm stroke) → approximately 305cc
  • CRF300L / CBR300R / CB300F / CL300 / Rebel 300 (63mm stroke) → approximately 350cc

Applications

  • Big Bore Street Build
  • Adventure & Touring Setup
  • Enduro & Rally Use
  • Performance Engine Projects