2021 Yamaha YZ250 [Model Overview]

The 2021 Yamaha YZ250: MotoCross Competition With A Big Engine!

Model Overview
Specifications
Features
Photos
Videos
Links

The 2021 YZ250 is Yamaha’s entry into professional national motocross. Powered by a 250cc 2-stroke, liquid-cooled, crankcase reed-valve single cylinder, the bike is designed to take a complete thrashing and still win every heat.

The no-compromises mentality of the YZ205 shows through with a full suite of competition parts already fitted from Yamaha’s factory. KYB fully adjustable front and rear shocks, with 48mm inverted forks up front travelling 11.8 inches and the adjustable link monocross at the rear giving 12.4 inches of travel.

Braking is through a 270mm floating disc up front, clamped by a 2-piston competition caliper, and a 245mm disc out back with a single-piston competition caliper, all to say that it is premium Japanese engineering in one package. The front wheel is 21 inches in diameter, with the rear at 19 inches. Ground clearance is at 14.2 inches (360 mm).

A cross-country competition variant exists in the YZ250X, which is listed for Canada and Europe. Much like the YZ125X, the major difference is different gearing, valves, and a more mid-range torque for scrambles and hill-climbs.

The 2021 Yamaha YZ250 starts at $7,499 USD / $8,299 CAD, with the YZ250X at $8,499 CAD.

On this page: we’ve curated specs, features, news, photos/videos, etc. so you can read up on the new 2021 Yamaha YZ250 in one place.

Model Overview

General Info

Price: $7,499 USD / $8,299 CAD
Key Features:
- Competition spec suspension and brakes
- Designed to be 100% compliant with all 250cc pro motocross regulations
- Full aluminum double-cradle frame with detachable rear subframe for repairs and replacement between heats.

Main Specs

Engine Type: 250cc single 2-stroke, liquid cooled, crankcase reed-valve
Horsepower: 49 HP
Torque: 32 lb-ft
Wet Weight: 227 lbs (103 kg)
Seat Height: 38.2 inches (970 mm)

Competitors

Honda CRF250R
KTM 250 SX 2-stroke
Suzuki RM-Z250

2021 Yamaha YZ250 Specifications

From Yamaha

ENGINE
Engine	250cc single 2-stroke, liquid cooled, crankcase reed-valve
Power	49 HP
Bore x Stroke	66.4mm × 72.0mm
Compression Ratio	8.9~10.6:1
Fuel System	Keihin® PWK38S
Starter	Electric
Lubrication
DRIVETRAIN
Clutch	Multiplate wet clutch
Transmission	Constant-mesh 5-speed
Final Drive	Chain
CHASSIS
Suspension Front	KYB® Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Suspension Rear	KYB® single shock; fully adjustable, 12.4-in travel
Brakes Front	Hydraulic disc, 270mm
Brakes Rear	Hydraulic disc, 245mm
Tires Front	80/100-21 Dunlop® MX52
Tires Rear	110/90-19 Dunlop® MX52
Fuel Tank Capacity	2.1 gal
Color	Team Yamaha Blue
ELECTRICAL
Ignition
Spark Plugs
Headlight	LED
Tail Light	LED
DIMENSIONS
Overall Length	85.7 in
Overall Width	32.6 in
Overall Height	51.4 in
Wheelbase	58.3 in
Ground Clearance	14.2 in
Seat Height	38.2 in
Wet Weight	227 lb
WARRANTY
Warranty	1 Year (Limited Factory Warranty)
Extension

2021 Yamaha YZ250 Features

Modern Styling
The front fender, front number plate, radiator shrouds, side number plates, air box, rear fender, fork guards, as well as the rear brake disc protector, rear brake caliper protector and wider foot pegs offer modern, aggressive styling —just like the 4-strokes.
Lightweight Frame
A light aluminum frame houses the patented YPVS

-equipped ripper of an engine for an awesome power-to-weight ratio.
Rider-Friendly Chassis
Ultra light weight means nimble handling and less fatigue.
270mm Front Brake
Large 270mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.

Two-Stroke Power
The 249cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard-hitting powerband.
Yamaha Power Valve System
Patented YPVS

combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top-end.
Advanced Carburetor
38mm Keihin® PWK carburetor with power jet and throttle position sensor (TPS) provides precise fuel/air mixing and extra-crisp throttle response throughout the powerband.
Race-Developed Intake
Special-design carbon fiber reed-valve petals improve the throttle response and engine performance across the entire rpm range.
Close-Ratio Transmission
Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multiplate clutch.
High-Capacity Radiator
Large-capacity radiator features a ten-row core with four louvers for maximum cooling efficiency.
Digital Ignition
Digital CDI system delivers precise spark for faster, stronger response anywhere in the powerband.

270mm Front Brake
Large 270mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.
Industry-Leading Fork
The KYB® 48mm forks feature the Speed-Sensitive System that uses piston speed to control the damping force for super-precise handling and a smooth ride.
Aluminum Frame
A carefully engineered, advanced aluminum frame and swingarm give the YZ250 the best handling in the 250 class.
Lightweight Subframe
Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
Advanced KYB® Shock
Fully adjustable KYB® shock features reduced-friction Kashima Coat

internals, 12.4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for increased comfort. All add up for fantastic rear wheel control and a sweet ride.
Excel® Rims
Lightweight 21-inch front and 19-inch rear Excel® rims provide exceptional durability and help reduce unsprung weight for optimal suspension, performance and handling.
Race-Ready Tires
Premium Dunlop® knobbies offer race-spec traction and wear.

Race-Ready Features
Complete with an aluminum handlebar, 2-position adjustable handlebar clamp, wide foot pegs, gripper seat and adjustable clutch lever with works-style cable adjuster, the YZ250 is ready to race out of the crate.