Racer X Films: 2025 Kawasaki KX250 Twisted Development Garage Build

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. Build: Twisted Development Text: Kris Keefer Photos/Video: Simon Cudby Parts Used: 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 Williams MotoWerx 2025 KX250 Airbox Kit @williams_motowerx REP Suspension Fork Re-Spring/Re-Valve, Shock Re-Spring/Re-Valve repsuspension.com 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 Visit Racer X Online: https://bit.ly/2VKTEp0 Subscribe to Racer X Magazine: https://bit.ly/2E45hlW Follow us on Instagram: https://bit.ly/2X2F7Xc Follow us on Facebook: https://bit.ly/2HvF6Wy Follow us on Twitter: https://bit.ly/2JWWaWV Subscribe to Racer X on YouTube: https://bit.ly/2HvhS2E