Confirm this item fits
Add your vehicle details to make sure this item fits.
TB Parts 170cc to 184cc Bore Kit and 28mm Carb Kit
$417.99
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
170cc to 184cc Big Bore Kit and 28mm Carburetor Performance Kit:
– All aluminum ceramic plated 64mm cylinder with skirt
– We increased the skirt height and size on the lightweight high compression 64mm piston with rings, pin, & clips to increase reliability and service life (picture is not updated yet showing
piston change)
– Head gasket kit – includes the cylinder head o-ring set and an exhaust gasket.
– 28mm Performance Carb (125 main/50 pilot)
– Rear Facing Intake Kit – not forward facing like the KLX110 style (picture is not updated yet showing intake change)
– Jet kit for varying conditions and exhausts
– Throttle Cable
– Foam Air Filter
If looking for easy bolt on power for the YX/GPX/Zongchen engines, this big bore and carb kit is it! Works great with your stock head or our new V2 Race Head. The kit includes an all aluminum ceramic plated 64mm cylinder (with skirt) which will increase your engine displacement and power. This cylinder is lighter than a steel sleeved aluminum cylinder, reduces friction (increasing power), improves sealing, and provides better heat transfer (runs and cools down quicker). We top off the bore kit with a 28mm performance carb kit that is easy to tune and works much better with this setup than your stock Chinese 26mm carb.
Additionally, our head gasket kit also includes a head o-ring set and exhaust gasket so you don’t have to re-use your old ones or make a trip to your local dealer to get new ones and spend more money. The new bore kit consists of high quality parts and requires no machining to the cases – bolt on and go! This kit is only for the YX/GPX/Zongchen 150cc to 160cc engines with a a KLX110 type topend. The increase in displacement will depend on your stock engine size. With this kit:
– A stock 150cc engine will increase to 170cc
– A stock 155cc engine will increase to 177cc
– A stock 160cc engine will increase to 184cc
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 having a professional technician install this kit. The parts are installed in the same manner as OEM parts
TBW1250, TBW0503, TBW0590, TBW0301, TBW0556, TBW0327, TBW0490, TBW0491
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