GFB Short Shift Kit for MY08-on WRX (part 4005) - Manual (Page 3)

7.
Now fit the GFB gearstick in the reverse order of removal from the car – make sure to seat the circlip
properly in the groove.
8.
The shift throw is adjustable on a GFB shifter, which is done by moving the position of the shift clamp -
higher for a shorter throw, lower for a longer throw. The 3 holes in the side plates simply allow you to
adjust the height of the shift linkage for your chosen shift clamp position - i.e. if you want a really short
throw, you’ll adjust the shift clamp upwards, and use the top hole on the plates in order for the shift
linkage to remain at the factory height so it doesn’t hit the transmission tunnel. GFB recommends using
the middle hole to begin with, and adjust it later if you want a shorter shift throw.
9.
Line up the steel sleeve in the shift clamp with the chosen side
plate hole, then hold one of the M8 washers between the shift
clamp and the side plate, then slide the M8 bolt through the
side plate, the washer, and into the shift clamp sleeve. Then
hold the remaining washer in the same place on the other side,
and push the bolt all the way through. Thread the nut onto the
end and fully tighten.
10. Now check the shift throw. Make sure the gearbox linkage
does not foul any of the body work in all gears. If you want to
change the shift throw, loosen the shift clamp and slide it up or
down to adjust the throw then re-tighten the screw firmly
(figure 8). Do a final check to ensure the linkage clears its
surroundings in all gears.
11.
The rubber /foam boot removed in step 1d will require some modification if it is to be re-fitted with the
GFB shifter installed. Looking at the underneath, you’ll see the large hole in the foam is actually
significantly smaller than the opening of the rubber boot. Enlarging the hole with a sharp knife to the
same size as the rubber boot will allow it to be re-fitted, or alternatively it can be left out altogether – its
only purpose is for additional sound deadening, and in our opinion the difference is unnoticeable with it
left off altogether (note that pre MY08 models never had this boot anyway) – this also makes it easier to
make adjustments to the shifter at a later date.
12.
Replace the plastic shrouds in the reverse order of removal.
NOTE:
•
Always make sure that no part of the shift mechanism is contacting any of the surroundings in all gears.
•
As the shift throw is reduced by a percentage, the principle of levers means that the force required to shift
gears is proportionally increased. This does NOT mean it will wear out your gearbox! The shifter is
merely a linkage to the gearbox – driver abuse is the only thing responsible for gearbox wear or damage.
•
GFB recommends using a high quality synthetic gearbox oil – an improvement in shift feel (particularly
when cold) over normal mineral oil (as used by Subaru) is noticeable.
GFB Short Shift Kits carry a 12 month warranty from the date of purchase which covers faulty components or
manufacturing. Warranty is limited only to the repair or replacement of GFB products provided they are used as
intended and in accordance with all appropriate warnings and limitations. No other warranty is expressed or implied.