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Your cart is empty.Installing a jet kit in your carb is the best way to get the maximum performance and longest life out of your bike. The stock carburetor from the factory is designed to meet Import Regulations ... not peak performance. Once you install or modify an exhaust or intake, you have put your bike into a leaner condition that will eventually destroy your engine due to heat from running lean. If you notice any popping, you are extremely lean. Our jet kit provides the parts and installation instructions to enrich all the circuits in the carb, to fix this problem, and add performance you can feel in the seat. This is a comprehensive jet kit, addressing all throttle positions, throttle response, and each kit is custom made to your bike and its modifications. Replacing just the jets does not address 1/4-3/4 throttle position, or throttle response, only full throttle. 1 KIT IS FOR THE ENTIRE BIKE, ALL CARBS ON THE BIKE. Benefits: More Peak Horse Power - (Designed to gain 6%-8% in HP with intake/exhaust, 2-3% on bone stock.) Longer Engine Life- (The jet kit is a performance upgrade that allows the engine to run cooler which increases engine component life.) Increased Performance- (Designed to improve all RPM ranges of performance and throttle response.) Lower EGT's (exhaust gas temperatures) If you have installed an aftermarket, or modified the stock exhaust or intake, this is needed or you will damage your engine. Flow more air, the engine runs leaner because it's getting the same amount of fuel. Running lean causes detonation and hotter EGT's which ruin exhaust valves and destroy engines. Kit Includes: Main Jets, Needle Adjusters, Nylon Spacers, Drill Bits for: Slide Hole Mod, Slide Spring Mod, Idle Mixture Mod, Bike Specs, Carb Schematic, Carb Synchronizer Tool (how to build for $5), Step by step instructions customized to your bike.
Mikey
Reviewed in the United States on July 6, 2023
My CRF125FB came to life after installing this kit. Bike had a FMF exhaust, high flow air filter, and snorkel removed before installing the jet kit. As you can imagine, it ran way too lean. After installing the 118 main jet, pilot jet, and two metal needle washers it ran really good. Might still be a bit lean in the mid range so I’ll shim the needle up a bit more next time I have the bike out. I would definitely recommend this kit, especially if exhaust and intake mods have been done.
Andrea S.
Reviewed in the United States on April 12, 2022
Kit included the right jets, spacers, drill bit, and instructions to get my OEM set up finely tuned. It feels like I have crisper acceleration in 1st and 2nd gear as well as more top end. The bike comes off choke a lot faster than it had previously. Customer support pre and post sale was great and responsive. Would buy again for sure.
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