New Yamaha Dirt Bikes For 2002!

Improved Four-Strokes/Proven Two-Strokes - New Stuff/Old Stuff/Good Stuff

Nov. 01, 2005 By ORC STAFF

TT-R90

The smallest member of Yamaha's four-stroke family of off-road motorcycles. The TT-R90 is an air-cooled, 89cc, 4-stroke engine that puts out smooth, reliable power perfectly suited to the smaller novice rider. A smooth-shifting, 3-speed transmission with automatic clutch (designed to ease the beginner into the basics of shifting) helps make riding simpler.

CD ignition system delivers hot, reliable spark and requires minimal maintenance. A low, 24.6" seat height provides handling-enhancing low center-of-gravity and allows most riders to put both feet down for added confidence.

Engine:

  • Air-cooled, 89cc, SOHC powerplant puts out smooth, reliable 4-stroke power perfectly suited to the smaller novice rider.
  • 16mm Mikuni carburetor ensures crisp, dependable throttle response.
  • Smooth-shifting, 3-speed transmission with automatic clutch, geared to ease the beginner into the basics of shifting, helps make riding easier.
  • CD ignition system delivers hot, reliable spark and requires minimal maintenance.
  • Lightweight, upswept exhaust system features quiet, USFS approved spark arrestor.

Chassis/Suspension:

  • Rigid frame design combines with a compact, 40.9" wheelbase for extremely quick steering and agile handling.
  • Front and rear drum brakes deliver strong, dependable stopping power.
  • Full-size knobby tires offer superb grip and exceptional wear.
  • Low, 24.6" seat height provides handling-enhancing low center of gravity and allows most riders to put both feet down for added confidence.
  • Telescopic front fork with 4.3" of travel for confidence-inspiring control over rough terrain.
  • Single rear shock with 3.7" of travel delivers progressive suspension performance to smooth out rugged trails.
  • 6.3" of ground clearance and a rugged engine skid plate maximize undercarriage protection.
  • Long, motocross-style seat is low, comfortable and allows easy rider movement.
  • Team Yamaha-inspired colors, graphics, and front and side number plates create styling similar to larger YZ lineup.
  • Large, folding cleated footpegs provide excellent footing even in wet or muddy conditions.
  • Premium-quality handgrips and levers are durable and comfortable.
  • Large front and rear plastic fenders offer exceptional durability.

Specifications:

MSRP

$1,699* Available from July 2001

Engine
Type 89cc, air-cooled, SOHC, 4-stroke single
Bore x stroke / mm 47 x 51.8mm
Final Drive Chain
Compression Ratio 8.5:1
Carburetion 16mm Mikuni
Ignition CDI
Transmission 3-speed w/automatic clutch
Suspension
Front Telescopic fork
Travel 7.1"
Rear Single shock
Travel 6.3"
Dimensions/Other
Tire - Front 2.50-14
Tire - Rear 3.00-12
Length 60"
Width 23.8"
Dry Weight 132 lbs.
Height 34.1"
Fuel Capacity 1.1 gallons
Wheelbase 40.9"
Seat Height 24.6"
Ground Clearance 6.3"
Color Team Yamaha Blue/White


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