Help with GRP Rockhopper gears for Vitara

[BearX90]

Hi All
I have a Suzuki x90. I'm thinking of putting a set of GRP Rockhopper Gears in.
Paste from there site:
The G.R.P. Rockhopper is the new dimension in gaining more from your Suzuki Vitara / Sidekick / Escudo. Increased torque of 120% from the low-range gear ratio will produce greater off-road ability. Once you have a Rockhopper gear ratio in your Suzuki you won't look back as 4WDing will be made much easier and become more fun.
The Rockhopper gears will quite simply replace the exhisting gears in the transfer case of any model Vitara. The Rockhopper gears have a new tooth count thus producing a new ratio over the standard gears. The end result is a sensational ratio of 4.009:1 (if that doesn't impress you how about say 72:1 in first gear). Hi - range ratios are not affected. Now running those 31" tyres is no longer a problem.

Standard Gearing Rockhopper Gearing
High Range Low Range High Range Low Range
1.000:1 1.817:1 1.000:1 4.009:1

The Rockhopper will suit any model Vitara / Sidekick. There are several different gear combinations available for the Vitara / Sidekick / Escudo models, however only one Rockhopper ratio is required to suit all models including the latest release "GRAND VITARA".

Q1) dose anyone kown if this is true?
Q2) are they any good?
Q3) will I lose any topend road speed?

[christover1]

If the x90 runs same chain driven t-case as the coil sprung sierra, then you will need to fit a gear driven t-case from earlier sierras, before you can fit a rock hopper.

[moose]

contact either ....

Liam ... Big balls offroad
Sam .... Overkill engineering
or
Greg .... GRP

[Liam]

The x90 runs the same running gear and chasis as a SWB vitara.

[mike]

contact either ....

Liam ... Big balls offroad
Sam .... Overkill engineering
or
Greg .... GRP

NB: Greg informed me last week that he has sold GRP...