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Doppler RR7 exhaust system

September 17th, 2010

The Doppler RR7 is an evolution of the S3R with a more imposing appearance and stronger performance high up in the rev range. Based on its appearance and the performance data available, the RR7 has new targets in sight.

A laser cut bracket has been incorporated on the new system along with a new silencer design cut from a block of aluminium rather than cast and finished off with CHC screws. An excellent seal has been achieved with the new silencer which sports an anodised titanium colour and thin collar clamp. Furthermore, the RR7 silencer and manifold stub are held in place with traction springs making life a little easier for servicing or quick tyre changes.

Typical to the racing appearance the RR7 makes use of a clear varnished expansion chamber. Currently the RR7 is available for the Yamaha Aerox, MBK Nitro, Gilera Runner, Piaggio NRG, Peugeot Speedfight, Ludix, MBK Booster and more.

Price: £159 from UK Doppler importer Adrenalin Pedstop (price includes VAT, free delivery plus a free Adrenalin Pedstop t-shirt). RRP: £190

To order from Adrenalin, please refer to the part numbers listed below:

AD/477297: Minarelli vertical engines (MBK Booster / Yamaha BW’s)
AD/477298: Minarelli horizontal engines (Yamaha Aerox / MBK Nitro)
AD/477299: Peugeot vertical engines (Peugeot Speedfight, Vivacity)
AD/477301: Piaggio two-stroke engines (Gilera Typhoon, Runner)