Home > Racing > 2 Stroke Racing

2 Stroke Racing

By: Sally Aquire - Updated: 16 Jan 2015 | comments*Discuss
 
2 Stroke Racing

In the UK, karting is divided into two main categories, which are known as 4-stroke racing and 2-stroke racing. Most of the karting classes in the UK fall into either of these categories. This article concentrates predominantly on 2-stroke racing, but we have a separate article on '4-stroke racing', if you want to read more about that aspect of karting.

What is 2-stroke Kart Racing?

2-stroke kart engines were originally used in motorcycles, but this is no longer particularly the case, as they are now created by specific kart engine manufacturers like Comer, TM, Yamaha and Rotax. 2-stroke kart engines can range from 4 hp (horsepower) to 7 hp, depending on the power of the engine. For example, a Formula A kart with a 100cc 2-stroke engine can generally go from 0 to 60 mph (miles per hour) in less than five seconds, and can reach 85 mph as a maximum speed. A single cylinder 60cc engine tends to have between 4 and 7 hp, while a much more powerful twin 250cc engine can reach 90 hp. 100cc 2-stroke kart engines can run up to 19,000 rmp (revs per minute). Most modern kart engines are water-cooled, in sharp contrast to the air-cooled varieties that were used in the sport. 4-stroke kart engines are usually air-cooled.

Which Karting Classes Use Karts with 2-stroke Engines?

There are several karting classes in the UK that use karts with 2-stroke engines. Some of these are briefly discussed in this section (you can read our 'Junior Karting Classes' and 'Senior Karting Classes' articles to see more information about many UK karting classes):

  • Comer Cadet: This karting class is part of the Cadet class of kart racing and is aimed at children aged eight to twelve. The karts in this class use 60cc Comer 2-stroke engines.
  • Rotax Max 125: This karting class is part of the Senior class of karting, which all karters are classed as being part of once they have turned sixteen. The karts in this class use Rotax FR125 Max sealed 2-stroke engines with clutch.
  • ICA (Intercontinental): This karting class is part of the Senior class of karting, which any karter can become part of after the age of sixteen. The karts in this class use reed valve 2-stroke engines (karts with 100cc engines are the most powerful that are allowed to take part in this karting class).
  • 210 Gearbox: This karting class is part of the Gearbox class of karting. The karts in this class use Villiers 9E air-cooled 2-stroke engines (or replicas of this type of engines). As with all other senior karting classes in the UK, karters in this class are all aged over sixteen.

Petrol Engines

If your kart uses a 2-stroke petrol engine, it will require more maintenance. They have to be completely stripped down after 35 hours of karting, and this must be done by a professional. If you don't own your own kart and are reliant on those owned by a karting track, this won't be a problem as you won't need to take on maintenance costs and duties.

2-stroke karting is an important part of karting for most go-kart drivers, as many of the karting classes in the UK uses karts with these engines.

You might also like...
Share Your Story, Join the Discussion or Seek Advice..
@Dre - you don't say how old you are, so I have included a link to the British Schools Carting Championship site which should give you all the information you need to know to get you started, link here. If you are a bit older I have included a link to the UK Motor Sports Assc here. I hope this helps.
GoingKarting - 19-Jan-15 @ 12:49 PM
Hey there, I'm really interested in starting karting. I'm fairly new to it all and just want advice and anything to help me move forward to beginning a karting career. Things like what's best to start off with, a 2 stroke or 4? Just anything would be really helpful and much appreciated. Thank you
Dre - 16-Jan-15 @ 10:39 PM
Share Your Story, Join the Discussion or Seek Advice...
Title:
(never shown)
Firstname:
(never shown)
Surname:
(never shown)
Email:
(never shown)
Nickname:
(shown)
Comment:
Validate:
Enter word:
Topics
Latest Comments
  • venky
    Re: Go Kart Transmission System
    i am studying mechanical enginerring. we are going to do go kart project in our college for gkdc compition we r new to these field…
    10 June 2017
  • Yabz
    Re: What Is Go-Karting?
    id love to start up a go kart business when i get the money but how long will it take for the business to catch up in a country like mine(uganda)
    23 February 2017
  • A.A.A
    Re: Go Kart Transmission System
    Can gearless transmission systems are used in karts?
    21 October 2016
  • Marvin
    Re: How Much Does Go-Karting Cost?
    How much it cost for 5 people at speedy fast track??
    28 August 2016
  • Lisa Lidgett
    Re: Types of Go-Karts
    My daughter has just been go karting. One kart hit her from behind, throwing her forward, at the same time as another kart has hit her on the…
    26 August 2016
  • Noorul
    Re: Go Kart Transmission System
    Is CVT transmission is suitable for go karts??? If yes why??? And please me will it be better than other transmission systems or…
    14 June 2016
  • GoingKarting
    Re: Junior Karting Classes
    Fozzy - Your Question:I have been carting with my son who is 14 years of age and I think there is something special about him , I have…
    3 December 2015
  • Fozzy
    Re: Junior Karting Classes
    I have been carting with my son who is 14 years of age and I think there is something special about him , I have raced Karts lots of times…
    2 December 2015
  • Chris
    Re: How Much Does Go-Karting Cost?
    How would one get into racing karts at a competative level? I know I'm quick and I enjoy karting. I think I've probably got…
    23 November 2015
  • kaushik
    Re: Go Kart Transmission System
    good but i want to know much about the centrifugal clutches
    19 October 2015
Further Reading...
Our Most Popular...
Add to my Yahoo!
Add to Google
Stumble this
Add to Twitter
Add To Facebook
RSS feed
You should seek independent professional advice before acting upon any information on the GoingKarting website. Please read our Disclaimer.