Strain gauge gear knob.

The Flatshifter “shift” is a strain gauged shear beam force sensor gear knob which has been designed to replace the OEM gear knob on a sequential gearbox to enable clutchless up and downshifting using our or any other makers  gear shifting system or ECU ignition-cut

and throttle blip functions.

Compatible with Hondata, Nismotronic, Haltech, Cobb, Neptune etc etc

This gear knob utilises a full bridge strain gauged shear beam load cell that

causes the force applied to the gear knob cover to act at the instantaneous

a centre of rotation of the gear lever making the device insensitive to hand

position, unlike similar inferior sensors that use bending beam load cells.

The device is supplied complete with cover, cable and connector.

An amplifier module is supplied to excite the bridge and amplify the bridge

output. Several amplifier options are available to suit individual applications.

Gear Knob Specification

Force Range Bi-directional 1–12Kg (10–120N).

Gauge resistance 350 Ohms.

Excitation voltage 5 Volts

Temperature range -10 – +50 deg. C.

Max overload 150% FS.

Tightening torque 16 Nm.

Attachment Thread M10 x 1.5 or ½” dia. for Quaife


Cable. 1 metre four core shielded cable fitted

with Binder IP40 conn.

Weight. 168 Grams.


                                                                                     Flatshifter Amplifier Module options

1 Flatshifter Amplifier Module. This version connects the gear knob to the Flatshifter shifter system as an alternative to the shift rod ( gear shift sensor). The trigger level is set via the adjusting knob on the amplifier module.

2 Ref. 2.5 volts Amplifier Module. This version gives a 2.5-volt output with no load on the load cell with the voltage rising above or falling below 2.5 volts depending on if the gear knob is pushed or pulled.

3 Ref 0 volts Amplifier Module. This gives 0 volts output with no load on the load cell and gives a positive or negative output depending on if the gear knob is pushed or pulled.

4 Dual Input Amplifier Module. ECU input signal wires for up-shift or downshift are switched to ground at a pre-set trigger level depending on whether the gear knob is pushed or pulled. The trigger level is adjustable via an adjusting knob on the amplifier module.

Please note options 2, 3, and 4 require a 12 volt DC supply and ground connection.

IMPORTANT NOTE this gear knob is the latest far superior full bridge strain gauged shear beam not the INFERIOR bending beam system offered elsewhere for a lot more money

The Flatshifter strain gauged gear knob is supplied with an amplifier module which has normally open relays. The relay contacts close momentarily when hand pressure is applied to the gear to knob. The pressure at which this happens is adjustable between 1 and 10 kg using the adjusting knob on the amplifier module.

The amplifier has an output cable with power and ground connections and outputs from the relays. The thread for attachment to the gear lever is M10 x 1.5 pitch. and 7/16 UNF (m10 x 1.5 pitch £25.00 extra)

The relays are rated ay 1.5 amps and usually switch a 5 or 12 volt ECU output to ground.


£649.00.00 GBP + VAT the best value and quality available by far   EMAIL or UK 01206 322557



We supplied 3 x Flatshifter “Shift” strain gauged gear knobs for 3 Mitsubishi lancer ex works Dakar rally cars , Owners comments below.

Hi Graham,

I think the best thing is that we totally forgot about them because we didn’t have any issues with them at all. I will look in our picture database and send you some of them. We don’t have any video because it was not allowed to carry an onboard camera during the stages.

I will check with RTL because we carried an onboard camera from the organization in one of the cars for a couple days.

Will send you more tomorrow when I am in the office.



Flatshifter “Shift” strain gauged gear knob on a race TVR

Hi Graham
we love the gear knob what a difference it makes to the gear change
I was short shifting along the pit straight at Snetterton. just to let the lads here the noise it makes as it changes gears
it’s a seamless change which not only makes for a better lap time but takes that shock out of the drive chain that you get as you let the clutch out with a normal change
no in-car camera at the moment but as soon as, i will let you have the footage

Tim hood

                                                                                        Onboard footage links

It worked great at VIR! We won both races and set a new track record by 1.1 seconds!  (Expert system)

Feel free to use it or any of my videos for your promotion.

Thank you,


Vice President of Manufacturing  Lee Adams  GWR Raptor at Doune hill climb with a new class record (Blip system) And here’s another one where we broke the lap record and 1st place.

at a sprint event, the same year both using flat-shifter Expert system.

Radical PR6 Prosport with FlatShifter Max+Pro Systems with Paddles. index=0

               Flatshifter strain gauge gear knob only £649.00 GBP + postage & V.A.T  (V.A.T in EU countries only)


                                                        UK 01206 322557 From outside of the UK 0044 1206 322557   email mail (at)

                                                                                                  12 MONTHS   WARRANTY ON ALL PRODUCTS