•
1 3

DHM

DHM 149 Big Bore Kit

$349.00 USD
$349.00 USD
Sale Sold out
DHMotoring 149CC Big Bore Kit for 2022+ Groms and Monkey

Forged 55mm piston with RK rings and correct 12mm pin
Copper base and head gaskets
Casted aluminum cylinder with steel sleeve

With both included gaskets compression ratio is at 12.5:1
With just the supplied single copper base it’s 13.2:1

ARacer MiniX and AF2 recommended currently as only standalone tuning is available until ECU flash library is created.

  • Free Shipping

    We offer free shipping on any order over $200!

  • Howling Tech Support

    Please feel free to call or email at any time for questions on our offerings.

Join the pack!

In addition to our online parts sales we offer great in house service and customization of your favorite bikes.