ATVs

Yamaha YFZ450R WORCS Racing Build

Build Sheet & Photos

March 17, 2016

Yamaha YFZ450R WORCS Racing BuildATV Rider

Do you ever wonder how much goes into building an World Off-Road Championship Series (WORCS) race machine? Kevin Avina, of Avina Prep, shared with us his complete Build Sheet for Ricardo Gonzalez Jr's WORCS-ready Yamaha YFZ450R.

Ricardo Gonzalez Jr. on his Yamaha YFZ450R built by Avina Prep.ATV Rider

SPONSORS:

Duncan Racing, Roll Design, Fat Boy 4 Exhausts, Fasst Comany, Hinson Racing,Fourwerx Carbon, Ims Products, Works Connection, RK Chain Rad Custom Graphics, Odi Grips, Tire Balls, RK Chain. Veys Power Sports, Respected Image Clothing, Maxima Oils, FlyRacing, Shoei Helmets, Scott Motorsports, Maxxis Tires, GF Freight.ATV Rider

Yamaha YFZ450R WORCS Build Sheet:
MOTOR
Pipe/ (muffler):	DRI Fat Boy 4 Complete Stainless Exhaust w/Custom Blue Muffler
Porting:	DRI Head Port (w/ SERDI valve seat machining) included in HP4 Kit
Piston:	DRI 13.5:1 piston by JE Piston
Head/Valves/Cam:	DRI HP4 Kit (Includes: DRI Head Port, SERDI Valve Seat Machining,Billet Camshaft, HD Valve Springs, HP Guides & Big Valve Kit
ECU:	Vortex X10 ECU (10 preprogrammed spark/fuel maps. Adjustable fuel trim)
Crankshaft:	OEM trued by DRI
Airbox/Filter/Oil:	Fuel Custom Intake & K&N Filter and Oil
DRIVE SYSTEM
Clutch:	Hinson Racing Billet Proof Basket, Inner Hub, Pressure Plate / DR C145R Clutch Kit
Engine & Transmission/oil:	Maxima Premium 4 10/40
Chain/lube:	RK Oring 520 & Maxima Chain Wax
Sprockets:	Sunstar steel 14T (Front) / 38T (Rear)
FRONT END
A-arms:	Roll Design
Spindles:	Stock
Front shocks:	Elka Stage 5 (Set Up By Elka Sevice Center)
Steering stem:	Roll Design
Steering stabilizer:	GPR Stabilizer
REAR END
Swingarm:	Stock
Rear axle/width/carrier:	LoneStar
Rear shocks: Elka Stage 5 (Set Up By Elka Sevice Center)
TIRES/WHEELS/HUBS
Tires f/r:	Maxxis razr 2 & Maxxis Razr Xc
Tire sizes f/r:	21x7-10 & 20x11-9
Wheels f/r:	DWT Beadlocks
Hubs f/r:	Stock
BRAKES
Calipers f/r:	Stock
Pads:	Stock
Rotors:	Braking
Brake lines:	”CROWN SERIES” by Duncan Racing
Brake Fluid:	Maxima Dot 4
HANDLEBARS/CONTROLS
Handlebars/bend:	Fasstco Flex Bars (Quad Bend)
Handguards:	Acerbis
Throttle:	Honda 450R Thumb Throttle
Clutch lever:	Works Connection Pro Perch
Cables:	Stock
MISCELLANEOUS
Foot Pegs:	Rath Foot Pegs & Nerf Bars
Front bumper/grab bar:	Duncan Racing, Stock
Skidplates:	GYTR
Seat:	Fourwerx Seat Cover & Foam
Tank:	IMS 3.2 Desert Tank w/ Dry Brake
Hood:	FourWerx Carbon Scoop
Body plastic:	Stock
Powdercoating:	Powder 1
Front Brake Master Cyl Cap:	Works Connection
Sprocket Guard:	CRF
Rotor Guard:	Blingstar

Yamaha YFZ450R WORCS Racing BuildATV Rider