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Carb Boring - CB500/550

Bore your stock CB500/550 carbs to 28mm

Key Benefits
     Much less expensive than Keihin CR smoothbores
     No fitment hassles
     Works on stock and modified engines


Step 1 
Carb venturi is widened and raised from 20mm x 23.6mm to 22mm x 27.2mm using a CNC mill 
Step 2
Carb throat exit is bored from 26.8MM to 28mm and smoothed into the venturi on a CNC lathe


Basic Boring 

You provide your stripped bare carb bodies for boring  - $239.00  + return shipping charges

You provide your stripped bare carb bodies for boring - $239.00 + return shopping charges
Carbs bodies must be completely stripped (the choke plates may be left intact). The bodies are spinning at 500rpm on the lathe, loose parts can become dangerous missiles.






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