The 2024 CRG FS4 is unique to the US Market and continues to be developed by LSR Motorsports under the guidance of CRG Nordam. The first of its kind, it was developed by US 4 Cycle Racers for the US LO206 Market. 


The drive side seat strut is positioned to allow  for the entirety of the engine weight to be over the frame rails. Traditional US chassis are designed with the engine hanging over the side frame rails. (What does this do?)

Adjustable axle cassettes allow for the 1040mm wheel base to be adjusted +/- 5mm. In addition to shortening or lengthening the wheel base, axle cassettes allow for raising or lowering ride height. With the CRG adjustable axle cassettes you have a total of 9 different chassis configurations. 

The US designed FS4 comes with all magnesium components. Front and Rear Torsion bars are optional but are highly recommended. 

The most recent update to the US Version was completed at the end of 2024. The rear crossbar has been moved back mere centimeters. The main rail has been strengthened and the cross rails in front and back of the seat are now 30mm. The changes have allowed for increased performance in high grip situations.  

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Technical Data

baFrame:  32mm/30mm Tubing Design 
Wheelbase:  1040 mm +/- 5 mm
Axle:  50mm x 1020 mm CRG M20 Axle
Front Hubs:  25mm x 82mm Magnesium Hubs
Rear Hubs:  50mm x 80mm Magnesium Hubs
Front Spindle: 10mm King Pin/25mm Spindle  
Front Wheels: Magnesium H 132
​Rear Wheels: Magnesium H 212
Brake System: Mini Ven (cadet)
Fuel Tank: 5 Litre
Bodywork: KG 507/508
​Rear Bumper: KG - CIK
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