Honda XR 80 R 100R Service Manual

XR 80R

Engine:
Engine: 79cc, air cooled, single cylinder, four stroke, SOHC, two-valve
Displacement: 80cc. Bore x Stroke: 47.5mm X 45mm. Compression Ratio: 9.7:1
Carburetion: 18mm piston-valve. Ignition: CDI.
Dimensions:
Weight: 141.1 lbs. Ground Clearance: 8.3 in. Wheelbase: 47.0 in.
Fuel Capacity: 1.6 gal., including 0.2 gal. Reserve
Seat Height: 28.5 in.
Drive Train:
Transmission: 5-speed. Final Drive: #420 chain, 14T/46T
Suspension:
Front: 27mm leading axle Showa fork, 5.0" of travel
Rear: Pro-Link single shock, 4.3" of travel
Brakes/Wheels/Tires:
Brakes: Front: Drum. Rear: Drum
Tires: Front: 2.50 X 16. Rear: 3.60 X 14

while the steel side covers are on the sc model the later r model came with plastic covers and could be modified with a sausage seat and a mcmuffin rear end strut.

XR 100R

Engine:
Engine: 99cc, air cooled, single cylinder, four stroke, SOHC, two-valve
Displacement: 99cc. Bore x Stroke: 53mm X 45mm. Compression Ratio: 9.4:1
Carburetion: 20mm piston-valve. Ignition: CDI.
Dimensions:
Weight: 149.9 lbs. Ground Clearance: 10.4 in. Wheelbase: 49.4 in.
Fuel Capacity: 1.6 gal., including 0.2 gal. Reserve
Seat Height: 30.3 in.
Drive Train:
Transmission: 5-speed. Final Drive: #428 chain, 14T/50T
Suspension:
Front: 27mm leading axle Showa fork, 5.0" of travel
Rear: Pro-Link single shock with spring pre-load adj., 4.7" of travel
Brakes/Wheels/Tires:
Brakes: Front: Drum. Rear: Drum
Tires: Front: 2.50-19. Rear: 3.00-16