TT-R 90 E

2006 Yamaha TT-R 90 E Technical Analysis & Specification Breakdown

Engineered by Yamaha for the minibike, cross motorcycle segment, the 2006 Yamaha TT-R 90 E features a 89 cc (5.4 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 5.5 HP (4 kW) at 7,000 rpm while maximum torque reaches 6.1 Nm (4.5 lb-ft) at 5,950 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 61.8 HP per liter and a 1,050 rpm working window between peak torque (5,950 rpm) and peak power (7,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the TT-R 90 E measures 60 kg (132 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.91 kg per horsepower). Rider ergonomics and chassis geometry center around a 625 mm (24.6 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,040 mm (40.9 in) wheelbase engineered for quick, flickable steering geometry.

Within MotoLibrary's Yamaha archive, this model family spans 3 indexed model years from 2005 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.