Honda CRF450RX — Off-road trail ready
By Jay Clark

  • This bike is Honda’s answer to KTM’s popular XC and Yamaha’s FX models. Honda has mainly gone after the full trail guys with the X models but this RX model is very close to their R motocross model. It comes with an 18” rear wheel, E start, and larger fuel tank.   For this build we tried to keep it a bit simple since the bike is very good in stock form.
  • For the motor we went with the Vertex High Compression Piston, a FMF slip on system with our stock header, a new HINSON BTL Slipper style clutch.
  • The mapping is also improved by Tokyo Mods with the stock ECU. 
  • Factory Connection worked to help out the suspension as the RX comes stock a bit softer than the R model. 
  • IMS Large tank and Cycra wrap around hand guards are for full on off-road mode.
  • TM Designs has the Chain block protection
  • Supersprox Stealth Sprocket for long durability  
  • Dunlop AT81 off road trail tires
  • Tusk wheels with oversized front rotor 
  • Works Connection radiator guards and extra pieces
  • For bodywork we used Cycra, Decal works, and Motoseat with their great pieces.

Highlights of the build

  • FMF Slip on stock Header  
  • Tokyo Mods mapped the stock ECU
  • High Compression Vertex Piston 
  • Removed back fire screen

Works Connection
Bike Stand
Brake caps
Clutch perch
Front Brake Lever
Chain Blocks
Oil Filter cover
Radiator guards

Hinson Clutch Components
BTL Clutch Set up and Outer Cover kit

Tusk Off road
Oversized front rotor
Rear rotor                   
Complete Wheel set  
Brake bolt kit
Sprocket Bolts kit
Lightweight Battery Lithium battery          

Factory Connection
Suspension re-valve and set up

Titanium Footpegs                      

DeCal Works
Semi-Custom Graphics kit                    
Pre printed number plates backgrounds 

Motion Pro
Grip Glue
Titan throttle tube

TM Designs
Rear Chain Guide

FMF Racing
Slip-on Factory 4.1’s

Vertex Pistons
High Compression Piston kit  (ring, pin and clips)

Tokyo Mods
Mapping for stock ECU  

Rear Stealth Sprocket  
O-ring Chain

Oversized Fuel tank

Baja Designs

Cycra Racing
Ultra Pro-Bend Full Wrap Around hand guards
Full Plastic kit Full Armor Skid Plate 

Uni Filter
Two-Stage air filter    
High pressure radiator cap
Formed Silicone Coolant hoses 

604 Fat Bars                           

Dunlop Tire
AT81 front 90/90-21
AT81 rear 120/90-18

Moto Seat
Custom Cool seat cover 



Chris Glaspell

The success of any online publication depends on the quality of execution, and
in this respect UpShift Online’s success is virtually assured.  It was founded by veteran motorcycle industry professionals: English-born photographer Simon Cudby, the premier photographer in the world of motocross, and Chris Glaspell, creative director with firms serving clients that include Suzuki, Yamaha, Kawasaki, Cycle World and Yoshimura. This, plus Upshift’s veteran editorial staff and unrivaled journalism, will gives readers unparalleled views of adventure motorcycling.