Increase your horsepower and open your motorcycle up to a higher performance level. We have intake parts to increase your machines throttle response and overall performance.
JACK in NY
Used in all my 2 strokes kx250 yz250 ???? Great throttle response bottom- mid- top Excellent durability easy installation anything boyseen maks is a quality product
Read All ReviewsDustin in OH
I paired this with the new Lectron Pro Series 38mm with Xcelerator rod. Seems to run pretty well with them. I decided to go with the rad valve because i wasnt sure how old my stock reeds were in my 250X but it was an easy install. I ended up leaning my metering rod 1 full turn lean and that seems to be the sweet spot. Plenty of power and im able to lug and roll into the throttle with no issues, Came with a new gasket and new bolts. The boot was a tight fit with the lectron but just a little bit a wiggling and it popped right in and is super secure.
Read All ReviewsCole in AB
Bikes actually rideable in the low end now, this and other mods helped a ton.
Read All ReviewsLarry in NC
Seems to be very well made. Only issue is the line is a little too small for the barbs on my YFZ450 carb to stretch and install cold. No problem, a few seconds with a heat gun to soften it up and it stretches easily and returns to size. Fits snug without a clamp, but reused the stock wire clamps. Adds a finished detail to your carb. Had a few inches left over even after making the bowl drain extra long.
Read All ReviewsJimmy in TX
The chart that send with the jet kit is very helpful
Read All ReviewsMichael in CA
Heard a lot about these screws having a habit of falling out of my YZ400F OEM carb, but decided to give it a shot anyways. I love this thing so much better than the OEM mixture screw. It will sit really close to the carb drain plug though. Been about 8 months and still has yet to fall out or lose adjustment.
Read All Reviews