TB Parts 64mm Ceramic Cylinder - Honda Grom/Monkey 125 (186cc Big Bore Replacement)

Scored a bore or just want a fresh jug for your 186cc build? This is the replacement cylinder for the TB Parts 64mm big bore kit on the Honda Grom and Monkey 125. It uses the same all-aluminum construction as the complete kit, so it drops right back into your build.

Why it’s different:

• No steel sleeve. The all-aluminum cylinder has a ceramic-coated bore, so it’s lighter than a sleeved jug.
• Less friction, better seal. The ceramic bore cuts drag and helps the rings seal, which shows up as power.
• Sheds heat fast. Solid aluminum moves heat better than a sleeved cylinder, so it warms up quicker and cools down quicker.

What’s included:

• 64mm ceramic-coated aluminum cylinder
• TB Banjo Bolts and Bypass
• Piston and gaskets are sold separately

Fitment:

• Honda Grom 125 / MSX125, 2014–2020
• Honda Monkey 125, 2019–2020
• Replacement for the TB Parts 186cc (64mm) big bore kit
• Not for the 2022+ 5-speed engine