Confirm this item fits
Add your vehicle details to make sure this item fits.
TB Parts 120cc Bore Kit w/Cam Chain - XR/CRF100
$208.99
Want extra peace of mind? Even if a seller doesn't offer returns,
MX Locker gives you the option to make any item returnable with Return Assurance at checkout.
Want extra peace of mind? Even if a seller doesn't offer returns,
MX Locker gives you the option to make any item returnable with Return Assurance at checkout.
MX Locker is 100% committed to ensuring that every sale ends in satisfaction—for both buyer and seller. Your payment is held until the item is delivered and approved. If it's not as described, you'll receive a full refund.
Every transaction is backed by our secure payment system. We hold funds until you confirm the item arrived in the promised condition—so you can shop worry-free.
MX Locker is 100% committed to ensuring that every sale ends in satisfaction—for both buyer and seller. Your payment is held until the item is delivered and approved. If it's not as described, you'll receive a full refund.
Every transaction is backed by our secure payment system. We hold funds until you confirm the item arrived in the promised condition—so you can shop worry-free.
Overview
Description
TB Parts 120cc big bore kit with cam chain. For all Honda XR/CRF100. High quality and high performance! Our 58mm big bore piston will add more power! Matched with an aluminum cylinder with a strong cast in place steel sleeve. This also makes a great stock replacement option as it cost less than an OEM rebuild. Safe with pump fuel 91+ octane too!
120cc XR100 & CRF100 Big Bore Performance Kit (58mm):
- Aluminum cylinder with steel sleeve
- High compression 58mm piston with rings, pin, & clips
- Head gasket kit
- New Cam Chain
This affordable 120cc Big Bore Kit will make your XR100 or CRF100 a lot more fun to ride by adding some much needed power. This kit does not require boring of the case – simply bolt on and go!!
There are no installation instructions, but if you can replace your piston, you can install this kit. If you don’t have any experience working on your engine, we highly recommend the Clymer’s repair manual or something similar. The parts are installed in the exact same manner as the stock Honda parts.
*Base tune – 40/105
Includes part numbers: TBW1825, TBW0625, TBW0626, TBW0627, TBW0331
Contact the seller for exact year and model fitment.
Meet The Seller
Responds within 3 hours.
Ships within 3 business days.
Items match their descriptions.
Need help? We're riders just like you.
By clicking subscribe, I agree to receive exclusive offers & promotions, news & reviews, and personalized tips for buying and selling on MX Locker.
MX Locker © 2025 Accessibility