Freeway Flyer Gearbox Rebuild / Upgrade

This upgrade to your own gearbox is not the typical swap out for a taller 4th gear, we instead convert the gearbox ring and pinion to move all the gears by a percentage therefore gear spacing remains even and will not over strain the drivetrain.

Our conversion will convert any Swing Axle or IRS gearbox to a super flyer, this will increase your motorway cruising speed, as with our T2 Bay Window gearboxes we offer three configurations of gearboxes, Freeway Flyer, Super Flyer and Ultra Flyer. £POA for Super & Ultra Flyer.

Note if the gearbox is significantly damaged, it may be subject to an additional exchange core £300+VAT. See below for gearbox ratios.

Please contact us to arrange sending your gear box to us.

£1,750.00 plus VAT

Out of stock

Product Details

Based on original tyre dimension of 195/65R15, standard gearbox ratios will achieve the following figures:

Standard Specs 4.375 (4th Gear)
54.8MPH@3,000RPM
64.0MPH@3,500RPM
73.1MPH@4,000RPM
82.2MPH@4,500RPM

Standard Specs 4.175 (4th Gear)
58.1MPH@3,000RPM
67.8MPH@3,500RPM
77.5MPH@4,000RPM
87.2MPH@4,500RPM

Freeway Flyer Specs (4th Gear)
64.6MPH@3,000RPM
75.4MPH@3,500RPM
86.1MPH@4,000RPM
96.9MPH@4,500RPM

Ultra Flyer Specs (4th Gear)
65.1MPH@3,000RPM
75.9MPH@3,500RPM
86.8MPH@4,000RPM
97.6MPH@4,500RPM

Super Flyer Specs (4th Gear)
70.1MPH@3,000RPM
81.8MPH@3,500RPM
93.5MPH@4,000RPM
105.2MPH@4,500RPM

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