Published on December 23rd, 2021 | by Joe

Honda TRX450R CRF250F MX ATV Review

India Trimbles National #4 Race Quad.


Without one motocross worthy, smaller displacement sport ATVs currently available for purchase new, like many National competitors in her age range, India rode a Hybrid ATV combining a more modern 250cc class, four stroke, dirt bike power plant with a stock or aftermarket based ATV chassis. While some classes in this age range allow the use of discontinued, production sport quads, modern dirt bike, based power has proven to the way to go if you’re planning on visiting the podium on a regular basis.


For parents and up and coming racers alike, we met up with her father/mechanic Dave to have him give us a run down on what goes into building a competitive TRX450R, CRF250R hybrid race quad. Her brother Talon handled taking the TRX250F for a hard ride on the motocross track for our cameras.


Machine Honda TRX450R/CRF250R Motocross Racer Conversion
Item Part
Engine Type 2011 CRF 250R
Porting Stock
Piston Wiseco 13:1
Valves Stock
Crank Stock
Gear Box Stock
Clutch Stock
Oil Klotz 10/40
Oil Filter K&N
Intake and Exhaust
Exhaust FMF Header, modified dasa mid pipe, Dasa trx 450 muffler
Intake  Fuel Customs tube w/TRX450 air box
Filter Uni
Fuel Management Stock Fuel Injection with remapped Stock ecm from vortex
Final Drive
Chain DID 520
Sprocket Front Renthal 13t
Sprocket rear Steel 38
Chain Rollers stock trx 450
Chain Slider stock trx 450
Chain Guide Walsh
Case Saver Stock crf 250
Frame Stock 05 trx 450 with Walsh Gusset Kit
Subframe JB
A-Arms Walsh +3
Spindles Stock
Swingarm Walsh EZ Link
Linkage EZ LINK
Axle RPM Dominator
Front Shocks PEP PB1
Rear Shocks PEP PB1
Hubs Front Hardkor
Hubs Rear Stock trx 450
Stem Walsh +1
Bar Clamp Walsh
Steering Stabilizer Precision Racing Pro Steering Stabilizer
Calipers Front Stock trx 450
Calipers Rear Stock trx 450
Pads Front Brand, model, compound
Pads Rear Brand, model, compound
Rotors Front Steamline
Rotors Rear Streamline
Brake Lines Front Streamline
Brake Lines Rear Streamline
Tires and Wheels
Tires Front Maxxis Razr plus
Tires Rear Maxxis Razr plus
Wheels Front DWT Rockout 4:1
Wheels Rear DWT Single Beadlock 3:5
Run Flat System N/A
Handlebars Flexx Bars
Grips Spider
Hand Guards Powermadd
Brake Lever Front Stock trx 450
Clutch Lever Works Connection
Brake Pedal Rear Stock trx 450
Seat Foam Stock trx 450
Seat Cover Fourwerx Custom
Nerf Bars/ Heel Guards Rath Racing Competition
Heel Guards Rath
Front Bumper Rath Siganature
Grab Bar Rath MX
Chassis Skid Plate n/a
Swingarm Skid Plate n/a
Fenders Front Stock trx 450 white
Fenders Rear Stock trx 450 white
Hood Fourwerx A57
Graphics FTR Custom

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