Birel RY31s1 (Click on photos to enlarge)
Chassis Specifications & Standard Equipment:

Features:
- Reinforced spindle yokes
- 32mm/30mm chassis construction
- 50mm Freeline "F" axle (40mm optional)
- Adjustable rear ride-height
- Freeline spherical castor/camber adjusters
- Freeline DF-Series Mag wheels
- 10-Liter fuel tank
- 320mm "Motorsport" steering wheel
- Freeline CIK09-14 bodywork
- Freeline aluminum motor mount
- Machined aluminum Freeline heel-stop

Torsion Bars:
- Duel removable front torsion bars
- Removable 4th rail design

Hubs:
-(F) 75mm Freeline Hi-Tech
-(R) 50x95 Freeline Hi-Tech

Brakes:
- Freeline hydraulic "CX" brake system
- 200mm floating cast iron rear brake rotor

Specs:
- Wheelbase: 1040mm
- Front Width: 715mm
- Rear Width: 645mm
- Overall Length: 1600mm

Options:
- Rear torsion
- Radiator
- Front hand-brake system

- Homologation #: 26/CH/14