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Engine & Drivetrain



Alpha Technik, exclusively available from Larsson UK, is Europe’s leading brand of restrictor kits, offering kits for a comprehensive range of models. The kits reduce the power output of the motorcycle to 35kw to comply with the requirements of the A2 UK license. Depending on the model, the standard kits either reduce the maximum throttle opening or reduce the inlet diameter. All kits including fitting instructions and a unique certificate of restriction, meaning that for all orders the vehicle registration number and chassis number are required at the time of ordering.

Following the launch of EURO 4, which meant that many models now have an electronic throttle, a new range of restrictor kits has been developed. The electronic kits plug into the existing wiring loom providing a fast and simple installation. In some instances, inlet reducers are also required.

Alpha Technik kits have been specifically researched, developed and tested to ensure full compliance. All kits meet European TUV approval.

New models recently added to the range include:

  • Honda CRF 1000L 2018-2019
  • Honda CB/CBR 650 FA 2017-2019
  • Yamaha XSR 700 A 2016-2019
  • Ducati Monster 797 2017
  • Yamaha MT07 Tracer 2016-2019
  • Suzuki SV650 2016-2019


Throttle stop/inlet reducer restrictor kits
Retail: £107.33 inc VAT

Electronic restrictor kits
Retail: £179.00 inc VAT

Dealer discount of 25% available on all Alpha Technik products

For more information please call our sales team on 01536 265633.


Larsson UK Ltd.
7 Alpha Court
Phoenix Parkway

Tel: +44 1536 265633

Fax: +44 1536 210390