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Polini Torsen WD swing arm

April 26th, 2010

It certainly looks the biz, it’s the ‘Torsen WD’ and it’s a brand new swing arm for 50cc Piaggio and Minarelli engines.

With Moto GP styling, the Torsen WD swing arm is designed to stiffen the engine case therefore avoiding flexing which could lead to cracking. The addition of a bearing to support the axle further reduces flexing and stress and according to Polini, improves transmission efficiency. The system also improves stability when riding and cornering as well as reducing asymmetric tyre wear.

The Torsen WD is suitable for both track use and road use and can be fitted exclusively together with the new Big Evolution exhausts or the Polini For Race 2 and Scooter Team homologated exhausts.

Fitment: Piaggio engines (both short and long engine cases). Minarelli engines, CW series with vertical cylinder, MY series (air cooled) and MA series (L/C) with horizontal cylinder and long case.

Available from UK Polini importers Adrenalin Pedstop. Prices and product links:

Polini Torsen WD swing arm for Piaggio Zip scooters £58.83 (inc. VAT)
Polini Torsen WD swing arm for Yamaha Aerox 50, MBK Nitro 50 £58.83 (inc. VAT)