Lot details Registration No: N/A MOT Expiry Date: N/A
Suzuki introduced the first of the RG500 series production racers for the 1976 season. The new machine shared the square four configuration of its works XR counterpart, although the bore and stroke dimensions remained at 56mm x 50.5mm, the XR works bikes changing to square 54mm x 54mm dimensions for the 1976 season. The Mk I was equipped with a steel frame with laid down shock absorbers, 35mm forks and open expansion chambers. The Mk II and Mk III variants introduced silenced expansion chambers and revised bodywork; however, it was the introduction of the Mk IV in 1979 that introduced a significant change. The engine dimensions became the same as the XR series with a bore and stroke of 54mm x 54mm, the fork stanchion diameter increased to 37mm and magnesium wheels supplied by Campagnola replaced the spoked items previously fitted. The Mk V and VI again represented a period of evolution, rather than revolution for the development of the RG with changes occurring to the expansion chambers, a braced swinging arm being introduced with the Mk V and anti dive being added to the front forks on the MKVI.
For 1982 a significantly revised version of the RG500 was introduced. A new engine featuring "stepped cylinders "was introduced. The crankcases were cast in magnesium and contained two crankshafts instead of the four found in the earlier versions. Breathing was improved with larger carburettors and revised expansion chambers. A new frame, retaining the tubular steel construction was employed but the rear suspension changed fro the traditional twin shock arrangement to a monoshock system with an alloy swinging arm and new 40mm forks were fitted at the front end. Offering approximately 115 bhp the Mk VII was followed in 1983 by the similar Mk VIII.
The example offered is described by the vendor as being in very good condition in all respects, although the vendor advises that the engine should be serviced prior to being taken to the track. It is attractively presented in the green, white and black livery and is fitted with a set of Brembo front calipers, but retains the standard rear caliper and otherwise appears to be largely to standard specification.
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