- Engine Parts CRF/XR50 - 88cc Bore Up Kit SKU:207-404-0000  E-mail this product to a friend CALL TO ORDER (909) 628-4722 (800) 634-9166
For Closed Course Competition Use Only. Not Intended for Street Use.

Description

Straight from Japan! This Bore Up Kit for the CRF50 is great for Supermoto, or anyone who wants more power out of their CRF50. This kit includes new cylinder, piston, piston rings, and all necessary gaskets.

**Note: Camshaft is NOT Included

KIT CONTENTS:

• 52mm Forged Aluminum Piston
• Piston Pin
• Piston Cir-clip Set
• Piston Ring Set
• 52mm Aluminum Coated Cylinder
• Head Gasket
• Base Gasket
• Right Head Side Gasket
• Left Head Side Gasket
• Cylinder Top Cover Gasket
• Intake Manifold Gasket
• O-Ring A 13.5x17.5x2
• O-Ring B 9x12x1.5
• O-Ring D 11.5x16x2
• Exhaust Gasket
• Cap Bolt M10x15 P1.5 SUS
• M10 Gasket

SPECIFICATIONS:

• Compression Ratio: 11.3:1
• Displacement: 87.92cc

FEATURES:

• Forged Aluminum Piston
• All Aluminum Coated Cylinder (Nikasil Plated)
  
• Metal Head & Base Gasket

RECOMMENDED PARTS:

• ST-1 Camshaft
• Oil temperature sensor (Temp Meter Sensor Type-J)

These products are designed, manufactured, intended, and sold for use on vehicles that are operated only on closed course racing circuits unless otherwise noted. Use of these products on public roads or lands is strictly prohibited and may be a violation of local, state, or federal laws. Products intended for use on vehicles operated on public roads or lands are clearly so indicated.