Photos/Video: Simon Cudby
Text: David Pingree
Build: Jay Clark

The goal of this project was to take the best trail bike out there and make it even better. The 2017-18 KTM 300XC is fast becoming the dream bike for most die-hard trail riders. The 2019 kept the fully updated engine with counter balancer that cuts vibration to nothing and it also got the updated chassis/plastic used on the SXF models.   

Jay Clark kept the modifications to the engine and suspension simple and concentrated on making the bike more durable in tough trail conditions. The performance is smile-inducing once you hit the dirt. The 300cc two-stroke is an excellent engine size; not too big to be unmanageable and not so small you feel like you need more. Plus, the Lectron carb eliminates the need to change jetting as you go up or down in elevation or temperature. This bike goes from great to amazing in this project.

Vertex Pistons     

www.vertexpistons.com     
Pro Replica Piston kit  (ring, pin and clips)   

FMF Racing

www.fmfracing.com   
Gnarly and shorty Silencer  — (Available only from your KTM dealer) 

TMR                                

www.tommorganracing1.com                  
Cylinder porting and head Mod Can run on Pump gas

Supersprox

www.supersproxusa.com        
Front 14T
Rear 51 Custom Red Stealth Sprocket
Gold Enduro Race Chain -G520-EXT-120 

MotoTassinari

www.mototassinari.com        
V-Force Reed Cage       

Polisport 

www.polisport.com 
Full Plastic kit — white 

Lectron 

www.lectronfuelsystems.com
Lectron 38mm high velocity Carb 

P3 Carbon

www.p3carbon.com                                
FMF Pipe carbon guard
Carbon Skid plate 

IMS   

www.imsproducts.com                         
Coolant Catch Can

DeCal Works               

www.decalmx.com                    
Semi-Custom Graphics kit                    
Pre printed number plates backgrounds

Works Connection

www.worksconnection.com  
Factory II  Stand   
Front & Rears brake caps
Rotating bar clamp
Steering stem nut
Rear Chain adjuster blocks 

Dunlop Tires 

www.dunlopmotorcycle.com
AT81 front  90/100-21
AT81 EX (Gummy) rear   110/100-18 

Uni Filter

www.unifilter.com       
Air Filter                                                  

Scar       

www.scar-racing.com           
Titanium Footpegs   

TM Designs

www.tmdesignworks.com                      
Rear Chain Guide 
Rear Disc and Master Guard  

Hinson Clutch Components                

www.hinsonracing.com          
Full Clutch set up and outer cover 

ICW                                     

www.icwbikestands.com   
Radiator straightening and bracing            

Pro Moto Billet       

www.promotobillet.com         
Rear Linkage guard 

Moto Seat          

www.motoseat.com                  
Custom Cool seat cover

Trail Tech                                           

www.trailtech.net                 
Radiator Fan

Motion Pro     

www.motionpro.com
Titan Throttle Tube
Grip Glue  

Renthal

www.renthal.com
604 Fat Bars                                          
Tacky grips 

Cycra Racing

www.cycraracing.com           
CV4 High Pressure Radiator Cap 
Ultra Pro Bend Hand Guards 

Bullet Proof designs

www.bulletproofdesigns.com                 
Rear Swing arm guard  

Tusk Off road

www.tuskoffroad.com                            
Oversized Rotor/Adaptor Bracket 

Factory Connection                        

www.factoryconnection.com             
Suspension rebuild and service

Malcolm Smith Motorsports

www.malcolmsmith.com
OEM parts 
Good deal on bike

Klotz Synthetic Lubricants               

www.klotzlube.com             
R-50 Two-Stroke Pre-Mix

Fasst Co 

www.fasstco.com
Rear Brake Return Spring
Rear Brake Clevis 

Enduro Engineering 

www.enduroeng.com
Clutch Cylinder Guard