Same-day shipping cutoff: Noon Pacific Time

We will be leaving the office slightly earlier than usual this Friday 5/24 at 2pm (Pacific Time) and will be back in action on Tuesday 5/28 at 9:30am. We are taking a little break to enjoy some quality time with our families and to celebrate the Memorial Day weekend.

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Big Bore Kit - 170cc, BBR

CARB   WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
KLX140(R) '08 - '25 KLX140L(RL) '08 - '25 KLX140G(RF) '17 - '25

High quality bore kit that shows substantial power gains throughout the RPM range. 63mm piston. 10.5:1 compression ratio allows use of premium pump gas. Complete kit includes: cylinder, piston, ring set, pin, clips and gaskets.

  • Brand new high quality BBR aluminum cylinder
  • 10.5:1 compression ratio
  • 63mm piston
  • Includes cylinder, piston, pin, rings, and gaskets
Please contact us for availability information
$269.95