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2025 KTM 350 SX-F XPR Garage Build

June 11, 2025, 2:00pm
Simon Cudby Simon Cudby Kris Keefer Kris Keefer
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  • 2025 KTM 350 SX-F XPR Garage Build Project Bike

After over 30 years in the off-road parts business, we never stopped developing and improving our products. That’s why Polisport is an OEM supplier of some of the main motorcycle brands. We create exclusive technologies, constantly think of innovative products, and we always care for the customer. We make performance plastics!

Advertisement | Advertise with Us

Build: Chad Braun/XPR Motorsports
Text: Kris Keefer
Video/Photos: Simon Cudby

Yes, just like I mentioned in the last issue, the KTM 350 SX-F is probably the most fun motocross bike there is to date. But what about making a 350 with more power? Will it make the bike too hard to ride? Can it compete with a 450? These are all the questions that I get asked all the time when it comes to this uniquely sized machine. Chad from XPR Motorsports has been working hard on a dual injector to not only get more power but make this 350 compete with the larger machines at your local motocross event. Since my recent injury, I thought, why not get back on a 350 with some modifications done to the engine and suspension to see if this porridge is juuuuuust right.

Products Used:

XPR Motorsports

Dual Injector Kit w/Vortex ECU, Hand Ported Headwork, Exhaust Flange

xprmotorsports.com

FMF Racing

4.1 Full Muffler System

fmfracing.com

Renthal

Fat Bar 672, Half Waffle Soft, 51 Tooth Rear Sprocket Black, 13 Tooth C/S Sprocket

renthal.com

Twin Air

Power-Flow Kit, Replacement Pre Oiled Filters

twinair.com

REP Suspension

KYB Inserts (Fork), Shock Bladder Kit

repsuspension.com

Dunlop

MX34 80/100-21 Front, MX34 110/90-19 Rear

dunlopmotorcycletires.com

DeCal Works

Full Graphics Kit

decalmx.com

VP Racing

MR Pro 6 Fuel

vpracingfuels.com

DID

Gold ERT3 Chain

didchain.com

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    1749581705_703df8dd7e200d51fd0e Simon Cudby
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