New Model

This completely new model of the OSSA range allows a perfect gradual progress for a trial rider. The 250 cylinder has been developed from scratch by OSSA seeking the best compromise for an easy while effective riding and shares all the technical characteristics of the new range which seeks the best reliability and bike behavior whatever your style of riding though is innovative technology.


TR280I Engine


249,2 cc


Two-stroke single cylinder inverted admission direct reed crankcase

Cooling System


Bore x Stroke

72×60 mm

Fuel Supply

EFI Kokusan Batery-less System


Kokusan CDI digital magnetic flywheel



Gear box

6 speed


Primary with gears,
secondary with chain

Engine lubrication

Mix 0.9% 100% synthetic

Gear and clutch lubrication

450 cc. Extreme Gear type
oil 75 W


TR280I Chassis


Tubular profile CR-Mo steel with
pipe of aluminium and forged
aluminum lower

Front suspension

Fork with aluminum bars, 40 mm
diameter Marzocchi adjustable
compression and rebound

Rear Suspension

Variable progressive system with
shock absorber Öhlins TTX adjustable
compression and rebound

Front Break

Disc diameter 185 mm 4-piston caliper

Rear Break

Disc diameter 150 mm 2-piston caliper

Front Wheel

28 spokes with 2.75 x21 tires

Rear Wheel

28 spokes with 4.00 x18 tubeless tire

Engine Protector

Built in AA7075 T6

Kick Start

Forged aluminum

Gear & Break Pedal

Forged aluminum with
flexible tip


TR280I Weight and dimensions


1.328 mm

Seat height

655 mm

Ground Clearance

340 mm

Tank capacity

2,6 liters

Dry weight

66.8 Kg