TB 170cc, HC, Forged Big Bore & Cam Kit – KLX140
Price Matching
- Price Match requests must be made BEFORE placing your order
- Competing product must be the exact same including color, size, year, part number, etc.
- Competing website must be a valid/authorized U.S. dealer
- Competing website must list prices, including shipping\handling, taxes, etc. in U.S. dollars
- Price matching is for the total cost of the item including shipping/handling, taxes and any other related fees
- Any items that are closeout/backorder/clearance items
- Blemished or scratch and dent
- Products with Manufacturer Advertised Price (MAP) policies
- Competitor coupons
- Verbal discounts or emailed discounts
- eBay, Amazon, Walmart and other e-commerce/discount market places
- Price match will exclude you from any additional discounts or offer codes on an order
- Low price guarantee program can be discontinued, changed or refused at any time by Faster Minis' sole discretion
Price Protection
We will honor our sales price within 48 hours of the time you purchased. You will need to email us your original order number and item(s) in question. A customer service rep will review the order and our current sale to verify eligibility. If your order falls within our time frame and the items are eligible and in stock, a refund will then be issued.
Description
TB 170cc, HC, Forged Big Bore & Cam Kit – KLX140
TBparts high compression forged piston 170cc big bore & cam kit. This will make your KLX140 a lot more fun to ride by adding some much needed power! Our new high compression forged piston is dome matched for the stock cylinder head to give you the ultimate high quality performance package. Combine that with our performance cam to really wake that KLX140 up! Our cam opens the valves up faster and provides more lift to let even more air and fuel in for even more power! Great for playbike racing and idles low enough to use on the trails too!
Key Features:
- High Compression Forged piston Kit w/ Wrist Pin, Ring Set, Cir-clips
- Safe with 91+ octane Pump Fuel
- TBparts 63mm aluminum cylinder with HD cast in steel sleeve
- 63mm Top End gasket kit
- Performance high lift cam, complete with new bearings
Compression ratio on this piston is:
- 10.9:1 – 170cc bore kit combined with the OEM cylinder head
- 12:1 – bore kit w/+6 stroker crank 188cc
In both combinations above, high octane pump gas can be used (Race gas is not required).
Note: 2025+ KLX140s – require case boring to fit. Our cylinder skirt is 65.95mm 2025+ cases are only 65.4mm wide.
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 or, at a minimum, purchasing the shop manual for your bike available from your local Kawasaki dealer. The parts are installed in the same manner as the OEM parts.
Note – A good jetting base for the factory carburetor is +1 size Pilot jet and +1 or 2 sizes up on the main jet.
Installation note – KLX140 camshaft bolts are reverse threaded, turn them right/clockwise to loosen/remove