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Yamaha DT125R
LiamDTR
By LiamDTR, 01/10/2011
  • 4,657 views
  • 1 comment
  1.

    Hy-Tech Racing Reeds  

    Faster throttle response · 03/02/2011

  2. Pipercross Air Filter  

    performance air filter · 03/02/2011

  3. Big Bore 180  

    Uprated Barrel · 03/02/2011

  4. Uprated Piston  

    as described! · 03/02/2011

Comments

Calum122

The bore CANNOT reach 180cc I'm afraid. 134cc with the powervalve intact although shaved. Any more than this and you will need to remove the powervalve since there is no room left to machine off the PV.

The only way you could get close to 180cc is by have the Athena kit. But even then the Athena kit is SO underpowered that it wouldn't warrant doing.

You get better results boring and tuning the standard 125 barrel.

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