Quick view Honda 1981–1991 Honda XR100 Cylinder Boring Service Compare MSRP: $100.00 - $300.00 1981–1991 Honda XR100 Cylinder Boring ServiceCommon engine problems are low compression, oil burning, poor performance, or visible cylinder wear.This service will restore compression, stop burning oil, increase horsepower and extend engine life... Choose Options Choose Options Add to Wish List Add to My Wish List Create New Wish List