Wheels & Tires

The Honda XR series motorcycle is a range of single cylinder Four-Stroke off-road motorcycles that are made in the U.S.A. This series of motorcycle is gradually being replaced with similar CRF series motorcycles. Some of the XR Series motorbikes came in two versions, R or L. more...

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Simply, the R version bikes were designed with off road in mind; they had very few creature comforts, and tended to come standard with knobbly off-road tyres fitted. The R version bikes, without modification, generally were not street legal. Conversely, the L version bikes were designed to be predominantly on road, with appropriate lighting, tyres and other features pertaining to road riding.

In its heyday, the XR series consisted of 10 models; however, currently only the XR50,XR80 and the baja-racer XR650R and dual-sport XR650L remain. The rest of the XR line has been transitioned into the CRF line.

The Small XRs

The bikes that fall under this category are physically smaller than any of the other bikes in the series. They are predominantly designed for children, or as pit bikes, for recreational fun, nothing more. For an adult rider, they would not be comfortable for a ride of any length.

XR50R

The XR50 is a small 4-stroke 50cc childrens entry level motorcyle. produced from 1968 until today originally called the Trail 50, then Z-50, the XR50, CRF50, and now a street (mini motard) legal version called the XR50.. again.

XR70R

ENGINE:
ENGINE 72cc, air cooled, single cylinder, four stroke, SOHC, two-valve
DISPLACEMENT 72cc. BORE X STROKE 47mm X 41.4mm. COMPRESSION RATIO 9.0:1
CARBURETION 13mm piston-valve. IGNITION CDI.
DIMENSIONS:
WEIGHT 125.7 lbs. GROUND CLEARANCE 6.5 in. WHEELBASE 41.5 in.
FUEL CAPACITY 1.6 gal., including 0.2 gal. Reserve
SEAT HEIGHT 25.5 in.
DRIVETRAIN :
TRANSMISSION 3-speed with automatic clutch. FINAL DRIVE #420 chain
SUSPENSION Front: 27mm Telescopic fork, 3.9" of travel
Rear: Single shock, 3.7" of travel
BRAKES/WHEELS/TIRES:
BRAKES Front: Drum. Rear: Drum
TIRES Front: 2.50 X 14. Rear: 3.00 X 12

XR80R

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.
DRIVETRAIN:
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
not all bikes are the same some very by year

Read more at Wikipedia.org