Yamaha YZ85

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Yamaha YZ85
Also called YZ 85 LW, YZ85 LW, YZ 85LW, YZ85LW, YZ 85
Production 2002 - 2019
Class Motocross
Predecessor Yamaha YZ80
85cc single cylinder, two-stroke
Bore / Stroke 47.5mm x 47.8mm
Compression ratio 8.1:1
Top Speed 61 mph
Torque 11.8 ft/lbs (16.0 Nm) @ 10500RPM
Ignition cdi
Spark Plug NGK BR10EG '00-08
Transmission Gear box: 6-speed

Final Drive: chain

Clutch: wet multi-disc
Final Drive Chain: x428 ‘02-19[1]
Suspension Front: inverted fork
Rear: single shock
Brakes Front: single disc. hydraulic.
Rear: single disc. hydraulic.
Front Tire 70/100-17
Rear Tire 90/100-14
Wheelbase 49.41 inches (1255 mm)
Length 71.69 inches (1821 mm)
Width 29.88 inches (759 mm)
Height 45.12 inches (1146 mm)
Seat Height 33.11 inches (841 mm)
Weight 145.51 pounds (66.0 Kg) (dry), 73.0 kg (wet)
Recommended Oil Yamalube 10w-40
Fuel Capacity 1.3 Gallon (4.92 Liters)
Related Yamaha YZ50
Yamaha YZ60
Yamaha YZ80
Yamaha YZ85
Yamaha YZ100
Yamaha YZ125
Yamaha YZ250
Yamaha YZ400
Yamaha YZ465
Yamaha YZ490
Competition Kawasaki KX85
Honda CR85
Suzuki RM85
Manuals 2003 Yamaha YZ85 (RLC) (LWR) Owners Service Manual

2004 Yamaha YZ85 Owners Service Manual
2005 Yamaha YZ85 Owners Service Manual
2006 Yamaha YZ85 Owners Service Manual
2007 Yamaha YZ85 Owners Service Manual
2010 Yamaha YZ85 Owners Manual

2012 Yamaha YZ85 Owners Manual
More Manuals

The Yamaha YZ85 was a single cylinder, two-stroke Trial motorcycle produced by Yamaha between 2002 and 2019. Max torque was 11.8 ft/lbs (16.0 Nm) @ 10,500 RPM.

Overview[edit | edit source]

Yamaha launched the first YZ85 in 2001 as a 2002 model with the purpose of completing the YZ range of motocross machines. Their purpose was soon achieved as the bike quickly became one of the most popular “big” toys between riders who begin experiencing their first bumps and corners.

The tradition of Yamaha dirt bikes began way back in 1851 with the birth of Torakusu Yamaha, who founded the Nippon Gakki Company in 1888. Although the company only produced musical instruments, after the Second World War, the company President Gen-ichi Kawakami decided to make use of a production line and tooling that had previously been used to produce aircraft propellers to produce what was the forerunner of the Yamaha dirt bikes produced today. But from propellers to real dirt bikes it was a long way and after the company then separated from Nippon Gakki Co. and became Yamaha Motor Company, the real story began and the first dirt bikes like the YZ250 (1975) and YZ400F (1998) started to exit the production line and being shipped around the world.

The model that we are referring to is not that old, being first produced in 2002 but I made this brief history to understand where Yamaha’s legacy comes from.

Yamaha YZ85 was first produced in 2002 and it continued being produced without important changes. The bike changed decals and that’s pretty much all concerning its evolution.

Competition[edit | edit source]

Although the bike is very powerful developing more horsepower than expected, the other Japanese motorcycle manufacturers didn’t stay behind as they know how important is for a rider to maintain a certain line during its riding years and they have to be impressed right from the start. In order to obtain a certain clientele, Honda produces CR85R (probably the biggest competitor for Yamaha), Suzuki entered the scene with its RM85 (a cheaper motorcycle with much to offer) and Kawasaki presented us KX85 (an even cheaper bike with as much to offer as the Suzuki).

Engine[edit | edit source]

The engine was a liquid cooled single cylinder, two-stroke. A 47.5mm bore x 47.8mm stroke result in a displacement of just 85.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).

Drive[edit | edit source]

The bike has a 6-speed transmission. Power was moderated via the wet multi-disc.

Chassis[edit | edit source]

It came with a 70/100-17 front tire and a 90/100-14 rear tire. Stopping was achieved via single disc. hydraulic. in the front and a single disc. hydraulic. in the rear. The front suspension was a inverted fork while the rear was equipped with a single shock. The YZ85 was fitted with a 1.3 Gallon (4.92 Liters) fuel tank. The bike weighed just 145.51 pounds (66.0 Kg). The wheelbase was 49.41 inches (1255 mm) long.

2003 Yamaha YZ 85[edit | edit source]

Yamaha's mini bike game is strong, thanks to the brand's continual investment in two-strokes and a broad playbike lineup that is both beginner friendly and extremely dependable. Yamaha YZ85 was first produced in 2002 and it continued being produced without important changes. The bike changed decals and that’s pretty much all concerning its evolution

If it has YZ in the name, then we're dealing with real racing bikes, and by all means, the 2002 YZ85 is one of them. A race-bred machine engineered for the youngest of riders, but derived from the top-drawer big-bore off-road bikes, the 2002 YZ85 packs an 85cc liquid-cooled 2-stroke engine, mounted in a racing-minded frame and rolling with premium Kayaba suspensions.

It may be a diminutive bike, but this one is literally loaded with first-class parts and technology, and you'd be surprised to see what it can do in the hands of the skilled young rider.

2006 Yamaha YZ85[edit | edit source]

A full-out competition bike, even though a scaled-down one, the 2005 YZ85 is the perfect entry-point in dirt racing for youngsters. Sporting the same careful craftsmanship like any other YZ machine out there, this diminutive one packs 36mm inverted forks, a 6-speed gearbox and liquid-cooling for the single-cylinder engine.

This light bike also comes with a dual stage washable foam air filter, easily detachable rear subframe, adjustable Kayaba suspensions and a DID chain. The cleated brake lever and folding shifter add even more precision to the foot controls for enhanced performance.

2007 Yamaha YZ85[edit | edit source]

2-stroke engines are strong pullers, even in the small-displacement class. The 2007 MY YZ85 is the best proof that a small bike can pack a huge amount of fun and effortlessly become a winner's bike in motocross competitions for youngsters. The bike comes with premium adjustable Kayaba front suspension and a matching piggyback monoshock in the rear section.

Add in stainless steel rotors, wide foot controls, updated graphics and a rugged chain guard to prevent the chain from derailing even when the going gets very tough, as well as more features derived from the bigger bikes aimed at getting the young riders acquainted to off-road motorcycling.

2008 Yamaha YZ85[edit | edit source]

The YZ85 is the smallest member of the 2008 MY competition bikes family, and it represents an excellent entry-point machine for the youngest riders. It is in fact a downscaled version of the bigger YZ bikes, and packs plenty of works-grade technology for consistent performance.

The 2-stroke 85cc liquid-cooled single is mated to a 6-speed manual transmission for an excellent spread of power and torque, and special-design parts allow easy servicing and maintenance. The 2008 model year also brings in updated graphics.

2009 Yamaha YZ85[edit | edit source]

The 2009 MY YZ85 is the entry-level off-road competition bike, a machine engineered for the youngest of riders and allowing them to kickstart their future champ career. Not a bike for the beginning riders, the YZ85 arrives with a manual 6-speed gearbox and multiple YZ-derived components and is focused on solid performance out on the track.

Adjustable Kayaba suspensions, DID rims, steel rotors and premium Dunlop tires, they all speak of its competition-aimed nature.

2010 Yamaha YZ85[edit | edit source]

The 2010 MY YZ85 brings the habitual miniature displacement grunt for the youngest of dirt racers, packing works-derived performance and dependability together into a bike which has bred countless generations of champions.

The YZ85 arrives with a 2-stroke single-cylinder engine loaded into a strong backbone steel frame, and rolling with adjustable Kayaba suspensions. A heavy-duty manual clutch serves the 6-speen transmission, and multiple race-derived components and technologies can be found in this small machine.

2011 Yamaha YZ85[edit | edit source]

The 2011 MY YZ85 is the smallest member in Yamaha's racing bike family, a 2-stroke machine that's great for teaching kinds what competition really is. This means a manual 6-speed transmission, adjustable suspensions, a bulletproof liquid-cooled engine and a tough-as-nails steel frame which can take a lot of beating.

Add in a bevy of other racing-grade components and technologies and you'll see why the YZ85 is not exactly your common beginner bike.

2013 Yamaha YZ85[edit | edit source]

The 2013 Yamaha YZ85 is the best dirt bike for teenagers looking to get into motocross. But the YZ85 is far from being a toy: it's an 85cc single-cylinder bike that's ready to race. It sports a rigid and light chassis making the bike very manageable and well-balanced, with increased handling thanks to the fully-adjustable suspension.

Despite its diminutive displacement, the YZ85 comes with a 6-speed gearbox and smooth shifting thanks to a clutch that has been designed to comply with the racing rigors.

The YZ85 comes with wide foot pegs,radiator shrouds and side panels for handy leverage on a variety of surfaces and fast cornering. The two-piece clutch cover and special-design airbox allow easy maintenance and the water pump impeller is now made of cast aluminum (vs. resin).

2014 Yamaha YZ85[edit | edit source]

The 2014 Yamaha YZ85 is a great way to introduce off-road riding to youngsters as it boasts an age-specific ergonomic design, provides an unintimidating feel and still packs in quite a punch to make the two-wheeled experience as thrilling as it gets. The displacement may seem small, but the 2-stroke engine delivers a lot of power to make riding the 2013 Yamaha YZ85 fun on any terrain, especially with the close-ratio 6-speed transmission.

Adjustable suspensions provide multiple setup options according to rider weight, terrain and riding style, offering a multitude of possibilities for both dirt track racing and weekend fun on the forest trails.

2018 Yamaha YZ85[edit | edit source]

Yamaha's mini bike game is strong, thanks to the brand's continual investment in two-strokes and a broad playbike lineup that is both beginner friendly and extremely dependable. The 2018 YZ85 is a popular Yamaha mini model, coming stock with hydraulic disc front brakes, a 33.1-inch seat height, 157 wet lb of fun, and a 85cc engine.

In Media[edit | edit source]

See Also[edit | edit source]

References[edit | edit source]

  1. 2019 Western Power Sports Catalog. Western Power Sports. 2019.