Garage Build
2025 Yamaha YZ450F

The Racer’s YZ450F
Back in August of 2024 we tested Phil Nicoletti’s full ClubMX Yamaha race machine that was too much for my vet hands to handle. However, within that test there was a secret to Phil’s bike that we uncovered that he wasn’t too willing to talk about. When we wanted to ask him about this secret throttle body that he was running on his race bike, he brushed over it and wanted us to keep moving on, so we knew we had to deep dive this specific part more. Sorry, Phil! Even though Phil’s bike was a full race engine done by Twisted Development we wanted to grab Jamie Ellis (owner of TD Racing), give him our completely stock 2025 YZ450F, and have him bolt on just the RP throttle body to see if this dual injected system can smooth out the blue beast that is the YZ450F.
> Twisted Development
RP Throttle Body Kit (includes Vortex ECU and hardware to bolt on kit at home)
td-racing.com
> Akrapovic
Evolution Full Muffler System
akrapovic.com
> Dunlop
120/80-19 MX14 Rear
80/100-21 MX3S Front
dunlopmotorcycletires.com
> Renthal
672 Fatbar, Half Waffle Soft Grips, 49T Rear Sprocket, 13T Front Sprocket
renthal.com
> Seat Concepts
All Blue Full Custom Seat
seatconcepts.com
> REP Suspension
Front Fork Re-Valve/Re-Spring, Rear Shock Re-Valve/Re-Spring, Full Linkage Kit (knuckle/pull rods)
repsuspension.com
> Twin Air
PowerFlow Kit
twinairusa.com
> VP Racing Fuels
T4 Fuel
vpracingfuels.com
> Polisport
Full Blue Plastic, Foldable
Motorcycle Stand
polisport.com
Subscribe Now
to continue reading Garage Build
and other premium content from the pages of Racer X magazine

I live this sport every day but I still find time to check out Racer X.”Ryan Dungey![]()
9 time Motocrosss & Supercross Champion
Only Racer X tells the full story:
what happened and why it happened.

Get immediate access to this issue + 12 more issues
Subscribe or Renew for your FREE Scott Fury Goggles! (Subscribe now!)
Already have a subscription?
Login to your Account