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- 2017 to 2021+ A/C ZR9000 Thundercat
- Clutch upgrades (drivetrain)
- STM tuner helix (only for STM secondary)
Related Products

STM Procross Torsional secondary conversion
STM
MSRP:
Now:
229.99$ USD
Was:
Product Description
2012-13 Arctic Cat Torsion spring cap option that is used with the STM billet helix's. Allows the use of the Arctic Cat torsion spring and has holes for spring load...

STM torsional Helix for STM torsion conversions
STM
MSRP:
Now:
129.99$ USD
Was:
STM torsional Helix for STM torsion conversions

TD 2016 Team high performance clutch kit (with torsion conversion)
STM
MSRP:
Now:
399.99$ USD
Was:
TD 2016 Team high performance clutch kit
Includes
STM team boss torsion conversion kit
Green torsion spring
Dalton 84 gram weights (specifiy 87g for drag racing application in the...

STM tuner Secondary clutch (11.25") for High HP application
STM
MSRP:
Now:
1,161.99$ USD
Was:
STM tuner Secondary clutch (11.25") for High HP application.
Much better belt durability
much better performance both on trail and at race track.
BOTH STM clutches are on all our Pro mods and Pro...

GBoost BADASS AC998 with STM 11.250" secondary
MSRP:
Now:
190.89$ USD
Was:
Fit's Arctic Cat 998 with STM 11.25" secondary
EX (Bad Ass) Belt Line
• Ultra-strong Aramid Fiber cord that can handle/carry more than 10,000 pounds of tension without stretching or breaking...
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STM tuner Secondary clutch (11.25") for High HP application
STM
MSRP:
Now:
1,161.99$ USD
Was:
STM tuner Secondary clutch (11.25") for High HP application.
Much better belt durability
much better performance both on trail and at race track.
BOTH STM clutches are on all our Pro mods and Pro...

Turbo Dynamics Stage 6 Upgrade package
Turbo Dynamics
MSRP:
Now:
1,199.99$ USD
Was:
Turbo Dynamics Stage 6 power package
compatible 2017-2020+ 998 turbo snowmobiles (SRX ZR9000, Sidewinder, Thundercat)
Huge power increase. Make power at lower boost level, Insane throttle...

STM torsional Helix for STM torsion conversions
STM
MSRP:
Now:
129.99$ USD
Was:
STM torsional Helix for STM torsion conversions

Tapp HD Billet Primary Clutch (Easy to run, quiet & more grip)
Tapp
MSRP:
Now:
2,070.85$ USD - 2,112.35$ USD
Was:
Tapp HD Billet Primary Clutch (easy to run, quiet clutch, more grip)
This clutch runs extremely quiet (no rattling). It also put more track HP down by reducing clutch slip.
It also significantly...

TD Yamaha Sidewinder high performance clutch kit
Turbo Dynamics
MSRP:
Now:
132.80$ USD
Was:
New TD clutch kit made up of the latest Dalton components.
1- We have their new secondary springs that prevents coil bind and has a stiffer start rate to keep the belt at the top of the secondary...

STM Procross Torsional secondary conversion
STM
MSRP:
Now:
229.99$ USD
Was:
Product Description
2012-13 Arctic Cat Torsion spring cap option that is used with the STM billet helix's. Allows the use of the Arctic Cat torsion spring and has holes for spring load...

DMC HD top gear fix (998 Turbo Sidewinder, Thundercat ZR9000) 2017-2022+
DMC
MSRP:
Now:
179.99$ USD
Was:
DMC top gear fix / upgrade (heavy duty) Sidewinder Thundercat zr9000 998 turbo 2017-2021+
This fixes the Top gear issue (more lubrication, more support, prevents issues with the driveshaft as...

Dalton billet 35 deg helix
Dalton
MSRP:
Now:
109.99$ USD
Was:
Dalton billet 35 degrees helix
Turbo Dynamics recommends this helix for all TD tunes.

Multi map bundle for 2017 to 2020 998 turbo 200-350HP Ecotrail Powertrail, Max 17 Max Spool 17 - 19 - 20 and Race
Turbo Dynamics
MSRP:
Now:
599.99$ USD
Was:
Multi ECU reflash bundle for the TD flasher cable OR Dash reflash (to allow selecting maps)
You can store up to 10 TD flash in your TD flasher cable. You can flash as many sleds as you wish No...

911 Response Clutch Cover by Thunder Products
MSRP:
Now:
290.49$ USD
Was:
Billet machined aircraft grade aluminum, the TPI 911 Response clutch cover adds rigidity to the clutch towers eliminating the normal flexing.