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Kinesis Racelight Aithein EVO Frameset is no longer available at Merlin Cycles. However you may find an alternative or updated product below.
Kinesis Racelight Aithein EVO Frameset
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Kinesis Racelight Aithein EVO Frameset

This item was discontinued 2nd July 2020.

If you require help finding an alternative to this product please contact customer services.

Kinesis Racelight Aithein EVO Frameset

The Kinesis Racelight Aithein EVO is a British designed and tested racing machine developed for fast-paced riding and racing, whether you’re looking to dominate your local crit, win the sprint for the sign on your weekly chain gang or simply want to increase your average speed on your favourite hilly loop the Aithein EVO is a bike that wants to be ridden at pace.

Evolved from the previous Racelight Aithein the Aithein EVO frame has several changes to improve the ride quality including a new downtube that features internal cable routing for both cable or Di2 gearing, a slightly slackened head tube and increased tyre-clearance to cater for up to 28mm wide tyres. Made from Kinesium this enhanced 6000 series Aluminium alloy is 25% stronger than 6061 at the same weight level; the Kinesis engineers have focused on the seat tube too, developing a Super-plastic Formed ‘Anti-Gravity’ seat tube – a modern version of ‘Hydroforming’ using far higher temperatures to produce complicated shapes in thinner wall tubing. The result is lighter weight tubing that can be formed to make the frame perform exactly as required adding core stability to the frame and allowing them to lighten the other main tubes of the frame. Other key features include a user-friendly BSA threaded bottom bracket and a lightweight 330g carbon monocoque 1.5” tapered fork.



  • Seat Post: 31.6mm
  • Seat Clamp: 34.9mm
  • Front Mech: Braze-on fitting
  • Brakes: Designed for short drop caliper brakes
  • BB: ‘BSA' English Threaded BB
  • Headset: Integrated for taper head tube - FSA No.42/ACB headset included with frame
  • Tyre Clearance: Up to 28mm tyres 

Frameset Includes:

  • Frame
  • Fork
  • Headset
  • Replaceable Dropout
  • BB Cable Guide


Frame Weights: 47cm = 1.33 kg / 50 = 1.38 kg / 53 = 1.43 kg / 56 = 1.52 kg / 59 = 1.60 kg

Please Note: Frame clearance for minimum 52t front chainring.

LB A fantastic frame, light , fast and looks stunning in the candy red. Bought for a winter bike build but definitely going to use all year.