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New for 2015

Hewland Prodrive 6 speed dog conversion

This simple conversion is a direct fit for all Hewland Prodrive N8-N16 gear kits with 6 dog type gears; the kit is an evolution of our successful Romtec/MND kit.

Featuring improved wider gears for much higher torque loadings, redesigned dog location and optimized ratio.

The kit simply replaces the existing spacer sleeve with a pair of heavy duty gears made from Aero/Mill spec S156 material incorporating the latest tooth profiles machined on state of the art CNC machinery, heat treated and Duplex shot penned for maximum strength and reliability

The conversion has been extensively tested during 2014 on top level tarmac and gravel events and has many fastest stage times under its belt.

                          The kit offers an overdriven 6th gear ratio of 0.888:1                          giving a potential top speed of 135mph + (see graph)

The upgrade has proven to be particularly useful on high speed stages both in Europe and the rest of the world; this also means that the Hewland kit becomes useful for circuit racing application due to its potential higher top speed especially when using 3.54 final drives


Our kit is supplied with a pair of gears, HD cage type bearing, spacer sleeve, new roll pin and drawing to modify your existing selector fork.

Selector forks can be modified by us (extra cost) or supplied new or on exchange basis



Now available

 Subaru Impreza STI front LSD steel end plate

To suit STi C2 front diff, 2001>2005, STi N11-12 2005>2008

 Heavy duty material (AN4340) and CNC precision manufactured to  our own specifications, this replaces the standard cast steel end plate that is prone to cracking and premature failure...

click on image for High resolution pictures


MND Motorsport have being involved with all aspects of gearbox design, manufacture and build, for many years, over which a vast wealth of experience has been gained.


All  transmission work undertaken, from Group N thought to WRC, Gearboxes, front differentials, rear differentials, Two and four wheel drive.

All makes covered:-






Subarprodriveup Impreza Sti hewland prodrive romtec WRC BRC BTRDA

cosworth EJ20 EJ25 Arrow Omega Accralight.

prodrive hewland subaru N8 N9 N10 N11 N12 N14 gpn gearbox

dog gearbox 5speed 6 speed STI front lsd rear diff front diff

parts rebuilds


e-mail: mndmotorsport@hotmail.com