Racer X Films: 2020 KTM 150 SX Two-Stroke Motocross Garage Build

Kris Keefer headed out to Sweney Cycle Park in Brush, Colorado and came across this tricked out KTM 150 SX that he had to get the full story on. Turns out it belongs to Mikey Sweney, and it was his first full build he's ever done. Check out all the details below.
Build: Mikey Sweney
Video: Jared Hardy
Parts List:
NIHILO CONCEPTS
Ignition Cover, Clutch Cover, Power Valve Cover, Gas Cap, Titanium Rear Brake Tip, Banjo Bolts, Lever Skins
www.nihiloconcepts.com
LYNKS RACING
Race Motor #L-517-20441, LR Cylinder, Head/Case Mods, True and Balanced Crankshaft, REM Transmission, LR Case Head, LR Solid Clutch Pins, V-Force 4 Reed Block, LR Piston Kit, Ceramic Coatings, Dyno Motor, Accurate Blueprint/Balance KTM 150SX, Gasket Engine Case 0.40 mm, O-Ring 89x2NBR, O-Ring 60x2FPM, Intake Flange, Keihin PWK 38s Carburetor, Spec Bolt Engine Kit KTM/TC 125/150
www.lynksracing.com
DEFY GRAPHICS
Complete Custom Graphic Kit
www.defygraphics.com
FMF RACING
Factory Fatty/Shorty Silencer
www.fmfracing.com
WP
Cone Valve Fork/Trax Shock
www.wp-suspension.com
WARP 9
Titanium Swing Arm Pivot Bolt, Front and Rear Titanium Axles
www.warp9racing.com
DUNLOP
MX 33 Front and Rear Tires
www.dunlopmotorcycletires.com
RENTHAL
604 Fatbar, Kevlar Half Waffle Grips, Chain and Sprockets (13-49)
www.renthal.com
ABOUT DECAL WORKS
Founded in 1989 by Ron and Janeen Joynt, DeCal Works has been the industry leader in pre-printed decals and custom graphics for 30 years. With a passion for racing and innovation, DeCal Works has, since its early days, focused its attention on high-quality products with great customer service.
Visit Racer X Online: bit.ly/2VKTEp0
Subscribe to Racer X Magazine: bit.ly/2E45hlW
Follow us on Instagram: bit.ly/2X2F7Xc
Follow us on Facebook: bit.ly/2HvF6Wy
Follow us on Twitter: bit.ly/2JWWaWV
Subscribe to Racer X on KZbin: bit.ly/2HvhS2E

[@kenwolfe5697]

That guy can ride the wheels off that thing and I’m here for it. Love the pure sound

[@georgecarmel6114]

Really getting to like my 2021 150 sx. Lot a fun. Tho laying here writing this with cracked ribs and can't remember what happened.

[@Your.dad..should.had.pulledout]

Ride fast die last

[@nathanld43]

Helo 150 sx more powerful than 125 sx?

[@georgecarmel6114]

@@nathanld43 Just think of it as a big bore 125. It won't rev as high but, it's easier to to pull a gear higher in turns. My friend TM 144 is faster down the straights but, I can pull him out of turns.

[@tjroe5190]

I've raced at Brush MX, excellent dirt.

[@RonaldD4490]

be in a museum one day

[@owenarsenault5955]

Look at the dirt 😍

[@Yamaha38XCRacer]

Just look at it!!!

[@Bruce.Wallace]

That thing is ultra trick. Unbelievably good.

[@aog-fg4ih]

“I’m not a big two stroke lover” said nobody ever

[@TheImtoomuch]

Yeah I don't know how that doesn't automatically disqualify you from a job at a motocross company.

[@brucewayne8408]

said every gay person ever***

[@johnthomas6614]

Tht is a Badass Build. & Keefer u Done a good job 2. ha ha ha. Wick On ✊ Chris K

[@milestsinnijinnie8344]

THE CUSTOM LOOKS NICE

[@danarrington2224]

How can you not be a fan of 2 strokes????? The only thing that I wouldn't like about this bike is that I would hate to get it dirty!!

[@alexandrakingi8502]

Alot of pros dont like them.

[@PasqualePozz]

Yes

[@jaytemplin7489]

Where is the Lectron? Sick bike !

[@HPRaceDevelopment]

jetting is shit up top or ignition not right

[@blakemeinert9380]

I had a ktm125 with the same motor full mod and sounded the same might be a lynks thing

[@HPRaceDevelopment]

@@blakemeinert9380 Mine dont sound that way - we have the ignition curve right for the mods

[@diydirtbikedoctor]

runs like poo on top

[@justinwaite26]

Call me crazy but....that thing sounds like shite...compared to all the 125/150 builds over the years...something sounded off