ATC250r Technical Data
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Published on 03-11-2010 02:22 AM
With Honda's success in the early Atc market and a growing Diy racing community, there existed a need for a factory built performance model. Using a fully suspended chassis, and a Cr250r derived power plant, came the 1981 Atc250r. For 1982, HondaATC250R's evolution with some minor updates, the most notable being rear hydraulic disk brakes.
In 1983 Honda came a new generation 250r. An improved engine, suspension updates including a version of Honda's Pro-link rising rate linkage rear suspension. For 1984, the ATC250R returned again with some minor improvements.
In 1985 came another generation of Atc250r. Entirely new frame, improved suspension, and a new liquid cooled engine.
General ATC250R Specifications: GENERATION 1 Production Years : 1981-1982
Engine type : 2 Stroke, Air cooled
Displacement : 248 cc
Bore x Stroke : 70.0 x 64.4 mm
Compression ratio : 6.6 to 1
Compression : 142 - 170 psi
Transmission : 5 speed
Clutch Type : Manual
Oil Capacity : n/a
Carburetion : PE 23A 27 mm Keihin
Starting system : forward kick
Fuel capacity : n/a
Wheelbase : 46.5 in
Overall Length : 72.4 in.
Overall Width : 42.5 in.
Ground Clearance : 4.9 in.
Seat Height : 28.7 in
Front Tires : 22 x 11 x 8
Rear Tires : 22 x 11 x 8
Front Suspension : Hydraulic telescoping forks
Rear Suspension : Mono shock
Front Brake : Hydraulic Disk
Rear Brake : 81' Drum, 82' Hydraulic Disc
Final Drive : chain
Dry Weight : 284 lbs
MSRP : $1,695.00
General ATC250R Specifications GENERATION 2 Production Years : 1983-1984
Engine type : 2 Stroke, Air cooled
Displacement : 248 cc
Bore x Stroke : 70.0 x 64.4 mm
Compression ratio : 6.6 to 1
Compression : 142 - 170 psi
Transmission : 5 speed
Clutch Type : Manual
Oil Capacity : n/a
Carburetion : 30mm Keihin
Starting system : forward kick
Fuel capacity : n/a
Wheelbase : 46.5 in
Overall Length : n/a
Overall Width : n/a
Ground Clearance : n/a
Seat Height : 28.7 in
Front Tires : 23.5 x 8 x 11
Rear Tires : 22 x 11 x 8
Front Suspension : Hydraulic telescoping forks
Rear Suspension : Mono shock
Front Brake : Hydraulic Disk
Rear Brake : Hydraulic Disk
Final Drive : chain
Dry Weight : 298 lbs
MSRP : $1,727.00
General ATC250R Specifications GENERATION 3 Production Years : 1985-1986
Engine type : 2 Stroke, Liquid Cooled
Displacement : 246 cc
Bore x Stroke : 66.0 x 72.0 mm
Compression ratio : 8.0 to 1
Compression : 142 - 170 psi
Transmission : 6 speed
Clutch Type : Manual
Oil Capacity : n/a
Carburetion : 85' 32mm Keihin, 86' 35mm Keihin
Starting system : forward kick
Fuel capacity : n/a
Wheelbase : 51.0 in
Overall Length : 74.6 in
Overall Width : n/a, adjustable
Ground Clearance : n/a
Seat Height : 29.9 in
Front Tires : 23.5 x 8 x 11
Rear Tires : 20 x 11 x 9
Front Suspension : Hydraulic telescoping forks
Rear Suspension : "Pro-Link" + Mono shock
Front Brake : Hydraulic Disk
Rear Brake : Hydraulic Disk
Final Drive : chain
Dry Weight : 293 lbs
MSRP : $2,298.00
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