YAMAHA 2019 2-STROKES: A POWERVALVE YZ85!

New 2019 YZ85

The new 2019 YZ85 youth motocross bike arrives with major redesigns purely focused on performance. Featuring an all-new engine, suspension, and more, the YZ85 is designed to provide Yamaha bLU cRU riders with race-winning performance and unrivaled reliability.

The new YZ85 motor has a mechanical powervalve, similar to the design used on the YZ125 and YZ250.

All-New Engine
A newly-designed 85cc liquid-cooled 2-stroke engine featuring a case reed-valve intake and a mechanical Yamaha Power Valve System (YPVS) lies at the heart of the 2019 YZ85. Combined with a redesigned cylinder and head, crankcase, crankshaft, connecting rod, transmission, exhaust and CDI unit, this new YZ engine provides broad, tractable power across the rev range without losing peak power at high RPM.

A four petal case-reed is used on the new 85 motor.

Updated Chassis and Optimized Ergonomics
The semi-double-cradle steel frame, removable subframe and redesigned aluminum swing-arm provide a nimble feel, confident handling and ease of maintenance. The ergonomics feature a flat, comfortable seat, four-position adjustable aluminum tapered handlebars and adjustable-reach levers to provide comfort and ease of movement for a wide range of young rider sizes.

A new chassis is also in store for Yamaha’s mini MXers.

Updated Brake System
For 2019, a new, stiffer front brake line with new routing improves braking feel, while wave-style brake discs offer improved self-cleaning and cooler-running performance. The 220mm front disc and 190mm rear disc deliver strong, precise stopping power.

The fork is a coil-spring KYB with adjustable rebound and compression damping.

Easily Tuned KYB® Coil Spring Suspension
The new YZ85 features KYB®’s race-proven, fully adjustable 36mm coil spring fork with one-piece outer tubes and tapered shape to provide optimal rigidity balance. This provides exceptional handling, bump absorption and ease of set-up for race-winning performance. The KYB® fully adjustable link-type shock utilizes specially designed damping characteristics to match the new chassis.

Price, Color and Availability
The all-new 2019 YZ85 will be available in Team Yamaha Blue and will arrive at Yamaha dealers starting in June 2018, with a MSRP of $4,599.

2019 YZ85 FEATURES

Upgraded Chassis
New front forks
New swingarm
New wave-style brake rotors
Yamaha Power Valve System
New head
Longer connecting rod design
Increased compression ratio
New Crankcase and Intake
28mm Keihin® flat-slide carburetor
New Expansion Chamber
Upgraded Transmission
High Capacity Radiator
High-Flow Airbox
Fully-Adjustable Fork
New lower fork guards provide
Fully Adjustable Shock
New Swingarm Design
Lightweight Subframe
Upgraded Brakes
Lightweight Wheels
Dunlop® MX3S® knobbies
New four-position adjustable handlebar mounts
Taper-style handlebars

YZ85 SPECIFICATIONS

Engine Type 85cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke 47.5mm x 47.8mm
Compression Ratio 8.2~9.6:1
Fuel Delivery Keihin® PWK 28
Transmission Constant-mesh 6-speed; multiplate wet clutch
Final Drive Chain
Suspension / Front Inverted fork; fully adjustable, 10.8-in travel
Suspension / Rear Single shock; fully adjustable, 11.1-in travel
Brakes / Front Hydraulic disc, 220mm
Brakes / Rear Hydraulic disc, 190mm
Tires / Front 70/100-17 Dunlop® MX3S®
Tires / Rear 90/100-14 Dunlop® MX3S®
L x W x H 71.7 in x 29.9 in x 45.1 in
Seat Height 33.1 in
Wheelbase 49.4 in
Rake (Caster Angle) 26.33°
Trail 3.5 in
Maximum Ground Clearance 13.0 in
Fuel Capacity 1.3 gal
Wet Weight 161 lb
Warranty 30 Day (Limited Factory Warranty)
Color Team Yamaha Blue

2019 YZ125 and YZ250

YZ250 SPECIFICATIONS

Engine Type 249cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke 66.4mm × 72.0mm
Compression Ratio 8.9~10.6:1
Fuel Delivery Keihin® PWK38S
Ignition CDI
Transmission Constant-mesh 5-speed; multiplate wet clutch
Final Drive Chain
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
L x W x H 85.7 in x 32.6 in x 51.4 in
Seat Height 39.1 in
Wheelbase 58.3 in
Rake (Caster Angle) 27.7°
Trail 4.8 in
Ground Clearance 14.2 in
Fuel Capacity 2.1 gal
Wet Weight 227 lb
Warranty 30 Day (Limited Factory Warranty)
Color Team Yamaha Blue

The legendary YZ125 and YZ250 models return for 2019 to complete Yamaha’s lineup of 2-stroke motocross bikes. Lightweight aluminum frames and patented YPVS™-equipped (Yamaha Power Valve System), reed-valve inducted engines provide an incredible power-to-weight ratio while maintaining Yamaha’s excellent reliability and durability. Both the YZ125 and YZ250 each receive the same industry leading KYB spring-type fork and KYB rear shock for unmatched handling on the track.

The 2019 YZ125 and YZ250 will be available in Team Yamaha Blue and begin arriving at Yamaha dealerships in June with MSRP’s of $6,499 and $7,399 respectively.

2019 YZ250X

Yamaha’s 2019 YZ250X brings two-stroke performance to cross country racing. Its lightweight aluminum frame and proven reed-valve inducted engine is race-ready. Based on the YZ250 motocross model, the YZ250X features a revised compression ratio, revised exhaust port, revised power valve timing, and model specific CDI unit for improved trail performance. All these features are focused on creating a wide, controllable power character ideal for cross country racing.

The 2019 YZ250X will be available at Yamaha dealerships beginning in June with a $7,499 MSRP.

YZ250X SPECIFICATIONS

Engine Type 249cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke 66.4mm × 72.0mm
Compression Ratio 7.9~9.4:1
Fuel Delivery Keihin® PWK38S
Ignition CDI
Transmission Constant-mesh 5-speed; multiplate wet clutch
Final Drive Chain
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 90/90-21 Dunlop® AT81F
Tires / Rear 110/100-18 Dunlop® AT81
L x W x H 86.0 in x 32.5 in x 50.8 in
Seat Height 38.2 in
Wheelbase 58.5 in
Rake (Caster Angle) 27.7°
Trail 4.8 in
Ground Clearance 14.2 in
Fuel Capacity 2.1 gal
Wet Weight 229 lb
Warranty 30 Day (Limited Factory Warranty)
Color Team Yamaha Blue