TPR Racing 61mm 171cc Big Bore Kit for Gy6

TPR Racing 61mm 171cc Big Bore Kit for Gy6

SKU #: TPR-1005
TPR Racing 61mm Big Bore Kit that will increase the displacement of a Gy6 to 171cc!

*You will NOT need to modify your engine case to accommodate this larger cylinder. Bolt On and Go!
$69.00 In stock


Availability: In stock

TPR Racing 61mm 171cc big bore kit for GY6 (A Case) High quality BBK that will give you the best bang for the bucks performance!


  • Cylinder head gasket 61 mm
  • Cylinder block gasket
  • Cylinder block
  • Piston 61 mm
  • Piston ring
  • Piston wrist pin 
  • Circlip 2 pcs





Carburetor rejet will be neccessary.  Professional installation is highly recommended!



NO WARRANTY ON RACE ENGINE parts or engine bore up kits.  There is no warranty stated or implied due to the unusual stresses placed on these parts and because we have no control over how they are installed and used.  Steady Garage will not be held liable for any failure or damage caused directly or indirectly from use of these products or engine.  The installation and use of these products or engine shall be conclusive evidence that the user assumes full responsibility for any damage caused directly or indirectly by their use.


This product is legal for closed-course competition use only; for racing vehicles (a competition vehicle not used on public highways). Intended for off-road use or race purposes; may not meet regulations of pollution controlled roads or highways. Not legal for vehicles registered and use in California.