KLX110 / KLX110L / DRZ110

Kawasaki KLX110 / KLX110L / DRZ110 Big Bore Kits

Upgrade your Kawasaki KLX110, KLX110L, or Suzuki DRZ110 with performance big bore kits from TB Parts. These legendary pit bikes and mini trail bikes share the same engine architecture, making them ideal candidates for bore-up kits ranging from 143cc to 178cc.

143cc, 155cc & 178cc Big Bore Options

TB Parts offers multiple displacement options for the KLX110 engine. The 143cc kit is the most popular entry-level upgrade — a direct bolt-on that delivers noticeably more power. The 155cc and 178cc kits are available for riders who want maximum displacement. All kits include cylinder, piston, rings, and gaskets.

KLX110L Electric Start Compatible

All TB Parts big bore kits listed here are compatible with both the KLX110 (kick start) and KLX110L (electric start) models. The shared engine architecture means the same bore-up kits work across both variants. Confirm your year before ordering — kits fit 2002–2023 KLX110/KLX110L.

Performance Cams & Race Heads

Pair your KLX110 big bore kit with a TB Parts V2 Race Head for the ultimate performance combination. Also available: performance camshafts, stroker cranks, and complete engine build kits for competition-level KLX110 builds.