2015 Yamaha Two-Strokes
Any company that still actively markets two-stroke motocross and off-road bikes in the U.S. deserves an extra measure of respect. When those two-strokes are as good as the Yamaha YZ line is, even more so. But that doesn’t mean that Yamaha is content to just let its YZ models become nostalgic relics, and for 2015 the YZ two-strokes receive updates to make them look more modern than ever before.
2015 Yamaha YZ250
Yamaha’s YZ250 receives a modern more aggressive styling package that includes a new front fender, front number plate, radiator shrouds, side number plates, airbox, rear fender and fork guards. Yamaha has also made technical changes to the rear sprocket, rear brake disc protector, and rear brake caliper protector.
Other changes include fitting the YZ250 with the latest-generation 48mm KYB Speed-Sensitive fork, just like the four-stroke machines, and a new clutch lever position adjuster that accommodates different rider hand sizes. The YZ250 also come with Dunlop’s new MX52 Geomax tires.
2015 Yamaha YZ250 Specifications
Engine Type: 249cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke: 66.4 x 72.0mm
Compression Ratio: 8.9~10.6:1
Fuel Delivery: Keihin PWK38S carburetor
Ignition: CDI
Transmission: Constant-mesh 5-speed; multiplate wet clutch
Final Drive: Chain
Suspension
Front: Speed-Sensitive System inverted fork; fully adjustable, 11.8-in. travel
Rear: Fully adjustable single shock, 12.4-in. travel
Front: Hydraulic single-disc brake, 250mm
Rear: Hydraulic single-disc brake, 245mm
Tires
Front: 80/100-21 MX52 Dunlop
Rear: 110/90-19 MX52 Dunlop
Seat Height: 39.1 in.
Wheelbase: 58.3 in.
Ground Clearance: 15.0 in.
Fuel Capacity: 2.1 gal.
Wet Weight*: 227 lbs.
Color: Team Yamaha Blue/White
MSRP: $7490
* Wet weight includes the vehicle with all standard equipment and all fluids, including oil,
coolant (as applicable) and a full tank of fuel.
2015 Yamaha YZ125
The 2015 Yamaha YZ125 benefits from the same styling updates as the YZ250, and it also gets the latest and greatest KYB Speed-Sensitive fork. Yamaha has also fitted the YZ125 with the new clutch lever position adjuster and Dunlop MX52 Geomax tires.
2015 Yamaha YZ125F2 Specifications
Engine Type: 124cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke: 54.0 x 54.5mm
Compression Ratio: 8.6~10.7:1
Fuel Delivery: Mikuni TMX 38 carburetor
Ignition: CDI
Transmission: Constant mesh, 6-speed multiplate wet clutch
Final Drive: Chain
Suspension
Front: Speed-Sensitive System inverted fork; fully adjustable, 11.8-in. travel
Rear: Fully adjustable single shock; 12.4-in. travel
Brakes
Front: Hydraulic single-disc brake, 250mm
Rear: Hydraulic single-disc brake, 245mm
Tires
Front: 80/100-21 MX52 Dunlop
Rear: 100/90-19 MX52 Dunlop
Seat Height: 38.4 in.
Wheelbase: 56.8 in.
Ground Clearance: 14.4 in.
Fuel Capacity: 2.1 gal.
Wet Weight*: 209 lbs.
Color: Team Yamaha Blue/White
MSRP: $6390
* Wet weight includes the vehicle with all standard equipment and all fluids, including oil,
coolant (as applicable) and a full tank of fuel.
2015 Yamaha YZ85
Not to be outdone by the bigger bikes in its family, the Yamaha YZ85 also gets enhanced styling for 2015 with a new front fender, front number plate, radiator shroud and side number plates. Along with these changes, new coloring on the triple clamps and handlebars lends even more of the styling flavor of the big YZs.
The YZ85’s liquid-cooled, 85cc, crankcase reed-valve-inducted, two-stroke is already a powerhouse in the class, but its power output has been boosted for 2015 via changes made to improve air intake efficiency. The 85’s intake/exhaust port timing has also been altered in the search for more performance.
The YZ85 also gets the new clutch lever reach adjuster to accommodate rider preferences and varying hand sizes, and it features a new seat cover color with new graphics.
2015 Yamaha YZ85F Specifications
Engine Type: 85cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke: 47.5 x 47.8mm
Compression Ratio: 8.2:1
Fuel Delivery: Keihin PWK 28 carburetor
Ignition: CDI
Transmission: Constant-mesh 6-speed; multiplate wet clutch
Final Drive: Chain
Suspension
Front: Inverted fork; fully adjustable, 10.8-in. travel
Rear: Single shock; fully adjustable, 11.1-in. travel
Front: Hydraulic single-disc brake, 220mm
Rear: Hydraulic single-disc brake, 190mm
Front: 70/100-17 Dunlop
Rear: 90/100-14 Dunlop
Seat Height: 34.0 in.
Wheelbase: 49.5 in.
Ground Clearance: 13.8 in.
Fuel Capacity: 1.3 gal.
Wet Weight*: 157 lbs.
Color: Team Yamaha Blue/White
MSRP: $4090
* Wet weight includes the vehicle with all standard equipment and all fluids, including oil,
coolant (as applicable) and a full tank of fuel.
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