A cracked transmission case is one of the most expensive ways to end a ride in a Polaris RZR XP 1000, and the factory case is known to give up at the snorkel tube and axle output when the machine gets abused. This heavy-duty GDP transmission case is reinforced exactly there, with 68% more metal in those areas, while adding only about 1 lb over stock. Buy the right half, the left (snorkel side) half, or the complete case for the XP 1000 and XP 4 1000.
Highlights
- Made of cast aluminum
- Designed to address OEM weak points
- More support ribs and gussets than stock
- Extra fins help keep the transmission cool
- 68% more metal reinforcing the snorkel tube and axle output areas
- Includes all necessary seals, plugs and shifter shim
- Each half is compatible with the OEM transmission
Beefed Up in the Right Places
Rather than adding weight everywhere, the case was strengthened where stock ones fail. The snorkel tube and axle output get 68% more metal, and added support ribs and gussets tie it all together. The total is only about 1 lb heavier than the factory case.
Runs Cooler
Those gussets and fins also pull heat away from the gears. Cooler gears run smoother and last longer, which matters on long, hot, hard rides.
Choose a Half or the Complete Case
If only one side is damaged, order the right half or the left (snorkel side) half, since each half works with the OEM transmission. Order the complete transmission case to replace both halves at once. Seals, plugs and the shifter shim are included.
What's in the Box
- Cast aluminum transmission case half or complete case (as selected)
- Seals, plugs and shifter shim
Who It's For and What Pairs Well
This is for owners who have cracked a case or want to prevent it on a hard-used machine. It's compatible with OEM Polaris and heavy-duty pinion shafts. Other gear reduction, transmission and clutch parts are in RZR XP 1000 clutch and transmission parts (4-seat: RZR XP 4 1000 clutch and transmission), and stronger axles in RZR XP 1000 axles and CVs help protect the output side.
Fitment
| Year | Make | Model |
|---|---|---|
| 2014-2023 | Polaris | RZR XP 1000 |
| 2015-2023 | Polaris | RZR XP 1000 High Lifter edition |
| 2017-2023 | Polaris | RZR XP 1000 Trails and Rocks edition |
| 2014-2023 | Polaris | RZR XP 4 1000 |
| 2016-2023 | Polaris | RZR XP 4 1000 High Lifter edition |
Installation Notes
Professional installation is highly recommended. Damage caused by improper installation is not covered under warranty. The install guide is linked below.
- source:
- superatv
- satv_url:
- https://www.superatv.com/polaris-rzr-xp-1000-transmission-case
- fitment_raw:
- Polaris RZR XP 1000 2014-2023; Polaris RZR XP 1000 High Lifter edition 2015-2023; Polaris RZR XP 1000 Trails and Rocks edition 2017-2023; Polaris RZR XP 4 1000 2014-2023; Polaris RZR XP 4 1000 High Lifter edition 2016-2023
- install_pdf:
- https://madmin.superatv.com/amfile/file/download/file/2847/product/8523/
- desc_status:
- rewritten_2026-10-23
