The Spondon XR45 of Theo Louwes. In the last racing days of the Suzuki RG500 different manufacturers made deltabox frames. I made a photo set, Bakker, Spondon, VRP, GPA, Harris and Golinelli, I also included the modified street frames. 
Rob Bron on the Bakker HRD GTR750 at Daytona in 1975.
Beautiful YZR500 replica seen at the CRT two stroke track day, Assen 7 Oktober 2023.
Kevin Schwantz his Lucky Strike RGV500 seen at the Classic GP at the TT circuit Assen September 2023.
The Dick de Jager 500cc four cylinder boxer two stroke is a very rare beast. As far as I know there exists only one engine. The König crankcases are known for weak casting and prone to crack. So de Jager decided to make a beter crankcase, the barrels are from Yamaha and the crank is a modified König one. The engine delivers 111 hp. Owner Luc de Smet from Belgium still races it at classic meetings with his female teammate Zoë Beun.
This home build race car with a tuned Suzuki GT750 engine used to race against the Ocelot racers in the D-sports race series in the USA.
GT750 special seen at the 2023 meeting in Hardenberg of the Suzuki GT club of the Netherlands.
The very special JPR Roland DKW 750 two stroke triple sidecar as raced by Jon Perkins and Ian Nickels in the Camathias cup. This is one of the very few two strokes that races in the Camathias cup as two strokes after 1967 are not allowed. It is one of the fastest sidecars of the field. The engine is a heavily modified Roland DKW Junior 750 triple, it uses reedvalve inlets, Mikuni carbs, Yamaha YZ250 pistons and a Hemmings racing transmission.
Stumbled across some pics on the interweb of a very strange and special bike. Two Honda NSR250 engines crafted together in a Suzuki GSXR400 frame by the Hamada brothers.
I found a very nice article on the interweb with lots of facts and trivia about the Suzuki RG500 and its riders.
The ex Jack Middelburg Honda RS500 at the Motorshow in Utrecht the Netherlands.
This very special Melkus RS1000 is uprated with a 1.3-litre two stroke V6 Müller-Andernach boat engine with three Solex twin carburettors. It has also been fitted with a custom hand-built Melkus exhaust. Now producing 110hp and 133lb-ft of torque, coupled to a five-speed manual gearbox with modified ratios. Weighing around 720kg, this RS1000 can reach a top speed of more than 200kmh. One of only 101 examples ever produced. Original the Melkus had a 1000cc three cylinder engine with 69hp and a topspeed of 165kmh.
