Engine

10mm diameter - Includes three valve shims of each size from 1.85 to 3.20 in .05 mm increments. 84 shims in total, 83 cents per shim!

These valve springs are required when using the BBR High Performance camshaft for the CRF150/230F.

• Built from the highest quality chrome-silicon wire
• Fully shot-peened and preset for long life

A set of four high quality valve stem seals.

K&L® shims exceed the maximum of the Apparent Rockwell Hardness "C" scale. Shims average 47.0 compared to the 46.0 maximum.

This kit fits KLR650 87-18 as well as other brands and models , please verify correct size for your model before purchase.

The key to getting your built DRZ/KLX motor to make big power.

• Intake is 32mm (stock 30mm)
• Exhaust is 28mm (stock 26mm)
• Available with or without Heavy-duty valve springs

4 custom made valves and 4 'Nickel Aluminum Bronze' valve seats. Valve sizes are 36mm intake (up from 32) & 32mm exhaust (up from 28). Requires professional installation.

  We strongly recommend checking valve to piston clearance when installing oversized valves.

7.48mm diameter - Includes three valve shims of each size from 1.20 to 3.50mm in .05mm increments.

141 shims in total. 0.57 cents per shim! Does your local dealer have the shims you need?

Premium cylinder head upgrade. 

Features CNC machined port shapes, larger high performance valve seats and custom made valves. Valve sizes are increased from the tiny stock 33mm intake & 28mm exhaust to 36mm intake & 32mm exhaust. 

This is not a radical modification. These bigger valves bring the valve sizes up to what would normally be found on other brands of 650 singles.

  We strongly recommend checking valve to piston clearance when installing oversized valves.

Includes three 9.48mm o.d. shims in each size from 1.20mm to 3.50mm in .05mm increments