Frequent question: Can you put a restrictor on a motorcycle?

How does a restrictor work on a motorcycle?

They simply limit the airflow hence restricting the power. Limit the air and fuel flow together, not just the airflow. They are sometimes used in conjuction with a throttle stop restrictor, which restricts how much throttle can be applied.

Does restricting a bike damage it?

restrictors do not alter AFR, therefore wil not lean out or richen mixture, so no engine damage can occur.

Can you restrict a Harley Davidson?

Yes, you can ride the Harley-Davidson XL1200 Sportster (1995 onwards) on an A2 motorbike licence. However, you will need to fit a restrictor kit to reduce its power output and make it A2 licence compliant!

How much can you restrict a motorbike?

You can restrict the engine power of a motorcycle so that it fits within subcategory A2 (20 to 35kW). You cannot restrict it below half its original power. This means that if the unrestricted power of the motorcycle is 60kW, you cannot restrict it any lower than 30kW.

Can you fit a restrictor kit yourself?

Can I fit the restrictor kit myself? We always recommend that the kit is fitted by a competent mechanic. The kit must be correctly fitted as per our instructions, and is only suitable for the one model type as detailed on the certificate.

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What is A2 restrictor?

What is a Restricted A2 Licence? A Restricted Licence can be gained by taking a motorcycle test on a motorcycle or scooter of at least 400cc and between 20 and 35kw (33 to 47bhp). It is also known as an A2 Licence. To qualify for this test you must have first done a CBT and a Motorcycle Theory Test.

What is a motorcycle restrictor kit?


It’s a kit of bits that restrict the power output of the bike to the legal maximum of 35Kw… There are 3 ways of doing this depending on the model of the bike. Changing the ECU. Fitting Inlet and/or Throttle Restrictor. Fitting Inlet and/or Carburettor Restrictor.

What does it mean when a motorcycle is restricted?

If you want to operate a motor-driven cycle, you’ll need to apply for a motorcycle license with a “B” restriction. The “B” restriction means you aren’t old enough or properly licensed to operate a motorcycle, but you can operate motor-driven cycles like mopeds, scooters, and motorized bikes.

Do you have to prove your bike is restricted?

There is no legal requirement for riders to have a so-called 33bhp certificate. Insurers say categorically a claim will not be rejected because you don’t have one. Neither police nor insurers regard them as proof a motorcycle is restricted. There is no industry standard on what they look like or who can issue them.

Can you go straight to A2 license?

If you already have an A1 licence and are 19 years old or more, you can take the practical test and upgrade to an A2 licence. After two years, or on reaching 24 years old, you can opt to take a Full Category A test and ride bikes of any capacity or power output.

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