Quick view Honda 1979–1985 Honda XL100S Cylinder Boring Service Compare MSRP: $100.00 - $300.00 1979–1985 Honda XL100S Cylinder Boring ServiceCommon engine problems include low compression, oil burning, poor performance and visible cylinder wear.This service restores compression, stops burning oil, improves power and extends engine life... Choose Options Choose Options Add to Wish List Add to My Wish List Create New Wish List