I'm going to warn you before things go too far: If you tinker with your bike in the garage, you're going to eventually be rebuilding the engine. I am not doubting your capabilities, but there is something addictive about engine work. First you repair a few minor things, and that experience gives you a well-earned sense of competence. The next thing you know, your bike is in 3,000 pieces, and you haven't seen the faces of your children in weeks. That's still not as far as you may fall, because one day you're going to see a broken-down machine for $50. And then the restoration phase of your addiction begins...
If you've got that clunker that needs a full rebuild, or are just trying to give your machine more power across the board, a big bore kit from BBR can make your endeavor more convenient. You can increase displacement, and every needed part is included.
When your kit arrives, it is going to feel like Christmas. This goody bag comes with a gasket kit, cylinder, high performance camshaft, piston kit, piston, ring set, piston pin, and piston pin clips. If you don't need every one of those parts, it would still serve you well to consider the kit because it will save you a couple hundred dollars over buying the parts separately.
Here's a piston kit from Wiseco if you're just looking for separate parts.
Find this BBR Motorsports Big Bore Kit:
Find this Big Bore Kit on eBay:
| BBR BIG BORE ENGINE KIT 120CC CAM HONDA XR100 CRF100 US $253.95 ![]() Auction Ends: 21d 14h 41m Make it yours... |
| New BBR Big Bore 120cc Engine Kit Honda CRF100 XR100 1981 2011 US $259.96 ![]() Auction Ends: 16d 1h 20m Make it yours... |
| TB PARTS KAWASAKI KLX110 143CC BIG BORE RACE KIT KLX 110 BBR US $158.90 ![]() Auction Ends: 13d 22h 30m Make it yours... |

