Garage Build
2025 Kawasaki KX250
BIKE Build by Twisted Development
WORDS: KRIS KEEFER
PHOTOS: SIMON CUDBY
The Kawasaki KX250 has an all-new chassis, suspension, and an updated engine as well as a smaller airbox for 2025. To me, Kawasaki made the chassis and suspension better, but I feel like the engine has lost low-end snap as well as torque feel. With my son being in the competitive 250B and 450B classes in 2025, having a bike that may be lacking in some of these engine categories could make it harder for him to get starts in front of these 120-140 pound throttle happy kids. I enlisted Jamie Ellis of Twisted Development to help this “amateur dad” to get his son some more power, but not a ticking time bomb, which is not easy to do. Everyone that races doesn’t need a full blown engine mod like this, but since I was doing one anyway I thought why not share a little on what was done to this Team Green build and if it’s worth the price of admission.
> Twisted Development
Custom HC Piston, Cylinder Head Port/Polish, Custom Low End Camshaft, Transmission REM Finish Polish/Tumble, Tuned Vortex ECU
td-racing.com
> Crank Works
Rod Kit, Press/True/Balance Crank
crankworks.com
> Pro Circuit
Ti-6 Pro Muffler System
procircuit.com
> Renthal
839 Fatbar, Half Waffle Soft Grips, 51T Rear Sprocket, 13T Front Sprocket
renthal.com
> REP Suspension
Fork Re-Spring/Re-Valve, Shock Re-Spring/Re-Valve
repsuspension.com
> Williams MotoWerx
2025 KX250 Airbox Kit
@williams_motowerx
> Hinson Racing
Complete Six Spring Clutch Kit, Basket, Inner Hub/Pressure Plate, Fiber/Steel Plates, Clutch Cover
hinsonracing.com
> Works Connection
Pro Launch Start Device
worksconnection.com
> DID
ERT3 Gold Chain 116L
didchain.com
> Dunlop
MX34 Rear 110/90-19, MX34 Front 80/100-21
dunlopmotorcycletires.com
> VP Racing Fuels
MR Pro 6 HT
vpracingfuels.com
> DeCal Works
Custom AK47 Graphics
decalmx.com
> Guts Racing
Ribbed Green Seat Cover
gutsracing.com
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