|Yamaha IT 400|
Single cylinder, two stroke, air-cooled
|Bore / Stroke||83.8mm x 83.8mm|
|Top Speed||78 mph|
|Horsepower||39.96 HP (29.8 KW) @ 7000RPM|
|Torque||30.98 ft/lbs (42.0 Nm) @ 6000RPM|
|Spark Plug||NGK B8EV '76-78 , '79|
|Transmission||Gear box: 5-Speed
Final Drive: Chain
|Final Drive||Chain: 520x106 ‘76-78|
|Front Sprocket||15T ‘76-78|
|Rear Sprocket||46T ‘76-78|
|Suspension||Front: Telescopic forks
|Wheelbase||56.3 inches (1430 mm)|
|Weight||126.0 kg (wet)|
|Recommended Oil||Yamalube 10w-40|
The Yamaha IT 400 was a Single cylinder, two stroke, air-cooled Trial motorcycle produced by Yamaha in 1978. Max torque was 30.98 ft/lbs (42.0 Nm) @ 6000 RPM. Claimed horsepower was 39.96 HP (29.8 KW) @ 7000 RPM.
The bike has a 5-Speed transmission. Power was moderated via the Wet multi-discs.
It came with a 3.00-21 front tire and a 150/80-18 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Telescopic forks while the rear was equipped with a Monoshock. The wheelbase was 56.3 inches (1430 mm) long.
1978 Yamaha IT 400
The IT 400 motorcycle design is a tough nut for any manufactured to track. Punching the IT through tight wooded sections is easy.
- 2019 Western Power Sports Catalog. Western Power Sports. 2019.