2003 Yamaha TTR90 Off-Road Model

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2003 Yamaha TTR90 Off-Road Model

Postby 4Strokes » Wed May 24, 2017 2:14 pm

2003 Yamaha TT-R90 Off-Road Model

For those lucky enough to develop an interest in riding early on, Yamaha’s TT-R90 is a must-have. Just for our smaller riders, a four-stroke SOHC 89cc air-cooled engine powers this compact and reliable powerplant, which pumps out consistent, even power making the ride as smooth as possible for those young, new riders.

The engine was specially developed for the TT-R90 and is equipped with a lightweight crank and compact CDI rotor that ensures instant throttle response and spirited acceleration. A Mikuni VM16SH carburetor delivers a precisely metered flow of fuel to the low-emission 89cc engine for a better-running engine.

The TT-R90 features a three-speed, semi-automatic transmission that assists riders in learning how to shift (i.e. riders graduating from the fully automatic PW50) and use throttle control without a clutch. Once these skills are mastered, the graduate may progress to larger kids’ bikes by adapting more quickly to the use of a clutch.

The front forks give a generous 4.3 inches of smooth-action wheel travel for a soft ride; while the lightweight rear suspension a square-section swinging arm and offers 3.7 inches of travel to tackle terrain and provide a cushioned-landing on jumps. Equipped with a 14-inch front wheel, 12-inch rear wheel and low 24.5-inch racing-type seat, the TT-R90 is the perfect fit for younger/smaller riders.

The TT-R90 chassis is based on the highly successful PW80 design, while Yamaha’s championship YZ line inspired its radical bodywork. Its tubular twin-spar construction creates a rigid chassis for razor-sharp handling, and this design also offers easy access to the engine for routine maintenance. For added engine protection the TT-R90 is fitted with a tough steel engine guard, and a grab handle behind the seat makes for simple loading into a truck or trailer.

A lightweight plastic fuel tank with air scoops, YZ-type front and rear fenders, sidepanels, front number plate and bright new graphics make the TT-R90 one of the most impressive kid’s bikes today.

The 2003 TT-R90 is available in Team Yamaha Blue/White at dealerships nationwide for a manufacturer’s suggested retail price of $1,699.

Engine Specifications
Type: 89cc, Air-cooled, SOHC, four-stroke
Bore & Stroke: 47 x 51.8mm
Compression ratio: 8.5:1
Carburetor: Mikuni 16 mm

Transmission Specifications
Type: 3-speed with automatic clutch

Chassis Specifications
Front suspension: Telescopic fork, 4.3" of travel
Rear suspension: Single shock, 3.7" of travel
Front brake: 95mm Drum
Rear brake: 110mm Drum
Front tire size: 2.50-14
Rear tire size: 3.00-12

Fuel tank: 1.1 gallons

Dimension and Dry Mass
Overall length: 60"
Overall width: 23.8"
Overall height: 34.1"
Wheelbase: 40.9"
Ground clearance: 6.3"
Seat height: 24.6"
Dry mass: 132 lbs.

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