2015 OSSA EXPLORER 250

The OSSA Explorer is probably the reference bike in the segment of the trial-tip. “Creating the bike that it was easier to reach the most difficult places” was the goal that the OSSA engineers and designers followed to conceive this model. To achieve this, they didn’t simply add a “kit” to the base of the TRi but designed an entire subframe, refined ergonomics including a large comfortable seat and specific footrests, and a large fuel tank that, in combination with its efficient fuel-injected engine, provide an excellent range. To achieve this, they didn’t simply add a “kit” to the base of the TRi but designed an entire subframe, refined ergonomics including a large comfortable seat and specific footrests, and a large fuel tank that, in combination with its efficient fuel-injected engine, provide an excellent range. The 2015 model gets a new Ollé front fork carefully adjusted for the use of the Explorer, along with all the engine and frame optimizations of its trials sister.

Specification

2015 EXPLORER 250 Engine
Capacity 247,7 cc
Type Two-stroke single cylinder inverted admission direct reed crankcase
Cooling System Liquid
Bore x Stroke 72,5×60 mm
Fuel Supply EFI Kokusan Battery-less System
Ignition Kokusan CDI digital magnetic flywheel
Clutch Hydraulic
control
Gear box 6 speed
Transmission Primary with gears, secondary with chain
Engine lubrication Mix 0.9% 100% synthetic oil
Gear and clutch lubrication 450 cc. Extreme Gear type oil 75 W
EXPLORER 250 Chassis
Type Tubular profile CR-Mo steel with pipe of cast aluminum
and forged aluminum lower
Front Suspension Ollé Hydraulic Fork with 40 mm sliders. Adjustable
rebound and compression damping
Rear Suspension Progressive hydraulic monoshock Ollé with adjustable
preload
Front Break Disc diameter 185 mm 4-piston calliper
Rear Break Disc diameter 180 mm 2-piston calliper
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 aluminium
Gear and break pedal Forged aluminium with flexible tip
EXPLORER 250 Weight and dimensions
Wheelbase 1.328 mm
Seat Height 820 mm
Ground Clearance 340 mm
Tank capacity 7,6 litres
Dry weight 74 Kg