Polaris RZR Pro R drivetrain components pulled off active race cars are some of the most race-proven hardware you can put in a build. Sustained speed, repeated impact, traction changes, and heat surface weak points fast under race conditions, which is why top desert race programs service their drivetrains on conservative preventative schedules — replacing parts well before wear becomes a concern. The components coming off those cars often carry race-driven refinements you won't find on dealer-stock parts.
This guide covers the Polaris RZR Pro R and Pro R Factory drivetrain race take-off parts DoubleZero Powersports specializes in — transmissions, differentials, driveshafts, clutch components, PTL, and PTO. The drivetrain is shared between the two platforms, so the same hardware applies whether you're maintaining a standard Pro R or supporting a Pro R Factory race effort.
One reason these take-off components matter is that the Pro R Factory race program still relies on many standard RZR Pro R-based drivetrain components. Even with conservative service intervals, those parts are being used in real race-day desert conditions, which says a lot about the strength of the underlying Pro R platform.
Polaris has publicly highlighted how much production Pro R hardware carries over into the Pro R Factory race program. In Shop Talk Episode 50, Polaris engineers walk through the similarities between the production RZR Pro R and the Pro R Factory race vehicle, calling out production-based drivetrain, suspension, steering, and engine components that continue to be used in competition. For buyers evaluating race take-off parts, it's useful context — straight from Polaris — on how much of the underlying Pro R platform stays intact at the highest levels of desert racing.
Polaris Shop Talk Ep. 50 – RZR Pro R vs. Pro R Factory Similarities
How to Use This Guide
This guide is built for:
- Racers building or maintaining a Pro R or Pro R Factory race car
- Race teams sourcing reliable spares before a long-distance event
- Pre-runner and chase-vehicle builders
- Enthusiast owners looking for OEM-grade replacement parts
- Buyers learning how race take-offs compare to new OEM
Each section below covers what the part does, why it matters in desert use, and any race-driven refinements found on take-off units.
What Race Take-Off Drivetrain Parts Are
Race take-offs are not surplus, damaged, or end-of-life parts. They're OEM components pulled from active race programs under conservative preventative service intervals — schedules designed to remove parts well before wear becomes a concern, reducing the risk of in-race failure.
Top professional Pro R race teams running at the highest levels of desert racing service their drivetrains on tight cycles. Specifics vary by component:
- Transmissions are commonly replaced after roughly every two races.
- Driveline components — clutches, rear differentials, axles, PTO, and related assemblies — may be replaced after every race depending on the team's service schedule.
Parts pulled under these intervals are not worn out — they're removed early to reduce race-day risk, which is why take-offs typically retain meaningful remaining service life. Exact condition, mileage, modification status, and service history vary unit to unit.
A few things to know about race take-offs as a category:
- They are used parts. Not new. Condition varies.
- Some carry race-driven modifications — polished gears, upgraded retention hardware, quick-change service features — but not every take-off has them.
- Availability is variable. Race teams pull parts on their own schedules.
- Documentation is per-unit when available. When it is, it's in the product listing; when it isn't, ask before purchase.
What Pro R Drivetrain Inventory Looks Like
DoubleZero Powersports regularly stocks many of the drivetrain components covered in this guide, although inventory changes as race teams complete service cycles and rotate parts through their programs. Pro R and Pro R Factory drivetrain take-offs cycle through inventory in recognizable patterns. Drive belts and clutch components rotate fastest because they sit on the tightest service intervals; transmissions and differentials cycle through less often but in significant counts when teams complete service rounds. Driveshafts, propshafts, PTL, and PTO assemblies show up regularly alongside the larger components.
Race-driven refinements like Fortin pinion hardware, polished gears, aluminum yokes, and quick-change PTL covers appear on some units but not all — they reflect team-level choices and are called out at the listing level when present. Mileage on individual listings gives a sense of how parts are managed in race use: most are pulled well under the totals where wear would ordinarily start, which is the conservative preventative service interval in action.
Pro R Differentials
The differentials carry traction and load through every drivetrain input. In desert racing, they absorb repeated shock loads, work through constant traction changes, and run under elevated heat for long durations. Both front and rear units are common service items for race programs.
Front Differential — 1337229
The Pro R Front Differential — 1337229 handles power and traction transfer at the front of the vehicle. Repeated high-traction conditions can cause standard pinion hardware to loosen over time, which shifts pinion preload and accelerates gear wear from that point on.
Some front differential take-offs carry Fortin-modified pinion nut hardware, a competition refinement that improves nut retention and helps the gear stack stay aligned under sustained load. Not every take-off includes this modification — confirm whether a specific unit carries it if it matters for your build.
Rear Differential — 1336923
The Pro R Rear Differential — 1336923 carries sustained load and runs at elevated temperature for long stretches of a desert race. Heat exposure tracks directly with oil breakdown and gear wear, which is why most race programs include rear diff service in their preventative cycle.
Some rear differential take-offs feature polished internal gears. Polishing reduces surface friction, lowers operating temperature, and smooths load transfer between gears. The polished surface also makes inspection easier — wear patterns show up cleanly against a smooth finish.
Pro R and Pro R Factory Transmissions
The Pro R Transmission — 1337444 is the largest single driveline component on the platform and the most common take-off offered as a complete unit rather than a component.
Take-off transmissions are not configured identically across all units. Common race-driven features seen on pulled transmissions include:
- Quick-change PTL covers — allow faster inspection and service without a full teardown. At race-week timing, the difference between accessing a component in fifteen minutes versus ninety minutes is real.
- PTO provisions vary by unit — some take-offs include PTO mounting provisions, others don't. Confirm before purchase if your build needs PTO support.
- Polished internal components on select units — same friction and heat benefit as polished differential gears.
Every take-off transmission is removed during scheduled service rather than at failure.
Pro R Driveshafts
Driveshafts carry constant load through every throttle change and terrain transition. In desert use, they also take impact loads from rocks and rough ground. Both the front and rear driveshafts are common spares across race and pre-runner builds.
Carbon Fiber Front Driveshaft — 1337366
The Carbon Fiber Front Driveshaft — 1337366 reduces rotational mass while maintaining race-grade strength. Lower rotational mass smooths throttle transitions and reduces shock loads transmitted to downstream drivetrain components. Carbon fiber take-off units feature aluminum yokes, a configuration consistent with race-spec hardware.
OEM Rear Driveshaft — 1334091
The OEM Rear Driveshaft — 1334091 is a standard race spare. Driveshafts take hits in desert use, and most race programs keep at least one rear spare ready to swap. Pre-runner and chase builds carry them for the same reason — when one goes down on course, the day is over until the spare is in.
Pro R Clutch Components
Clutch components are consumables in desert racing. Heat, belt load, and constant throttle modulation make inspection and replacement part of standard race prep. Pro R clutch take-offs are typically standard OEM components — direct replacements for owners who want to refresh matched pairs without sourcing new at full OEM cost.
Drive Clutch — 1327340
The Drive Clutch — 1327340 is the primary clutch on the engine side. Drive clutches are commonly pulled and replaced alongside the secondary to keep matched wear and consistent engagement behavior across the system.
Secondary Clutch Assemblies — 1323568 and 1323570
The Pro R Secondary Clutch Set — 1323568 / 1323570 ships as a matched inner-and-outer pair. Buying as a matched set preserves the wear pattern between inner and outer halves, which keeps engagement smooth and predictable across operating conditions.
Drive Belt — 3211226
The Drive Belt — 3211226 is the highest-wear single component in the clutch system. Race programs replace belts on tight intervals — sometimes after every event. Take-offs are commonly available because of that turnover.
PTL and PTO Components
The Power Transfer Line and Power Take-Off both sit on the list of components that race teams service preventatively rather than to failure. Tolerance stack-up, secondary driveline integrity, and reliability of auxiliary systems all depend on these assemblies staying within spec across long race distances.
Power Transfer Line (PTL) — 3239506
The PTL — 3239506 must hold tight tolerances to avoid vibration and downstream driveline issues. PTL assemblies are commonly replaced preventatively in race programs to keep the tolerance stack clean over long-format events.
Power Take-Off (PTO) — 3236733
The PTO — 3236733 drives auxiliary systems off the main driveline. Because PTO-driven systems affect multiple vehicle functions, race programs commonly include the PTO in scheduled race prep — especially before long endurance events.
Why Product Details Matter on Race Take-Off Parts
Race take-off drivetrain parts are not one-size-fits-all inventory. Even when the part number is the same, each unit can vary by service history, condition, included components, and race-driven modifications. That is why DoubleZero Powersports focuses on listing-level details instead of treating every take-off part as identical.
- Service history — when documented, it helps explain when the part was installed, what events it ran, and why it was removed.
- Race-driven modifications — Fortin pinion hardware, polished gears, quick-change covers, and similar refinements vary by unit and are called out when known.
- Completeness — included hardware, gaskets, mounts, and auxiliary components can vary by listing.
- Visual condition — photos and listing notes help set expectations for each specific part.
- Fitment — the components in this guide are listed for Pro R and Pro R Factory use. For anything outside that scope, confirm fitment before ordering.
This approach gives buyers a clearer picture of the exact component they are considering, while keeping expectations realistic for used race take-off parts. Specific condition, modification status, and remaining service life vary unit to unit.
Where DoubleZero Powersports Fits
DoubleZero Powersports specializes in Pro R and Pro R Factory drivetrain take-offs sourced from top professional Pro R race teams running at the highest levels of desert racing. Components come out of those cars under the conservative preventative service intervals described above — removed early to reduce race-day risk rather than at end of life. Each unit is listed individually because no two take-offs come off a race car in identical condition.
When documentation is available for a specific unit, it's referenced in the product listing; when it isn't, ask before purchase. Inventory is variable — race teams pull parts on their own schedules, and individual product listings are the source of truth for current availability and condition.
Buyer Takeaway
Race-grade drivetrain parts don't need to be aftermarket. The Pro R and Pro R Factory components in this guide are OEM hardware pulled from cars running at the front of Pro UTV Open fields, often carrying race-driven refinements you won't find on dealer-stock parts.
For racers, builders, and serious Pro R owners, that combination — OEM provenance, proven race miles, meaningful remaining service life, and detail-level product listings — makes race take-offs one of the strongest sources of drivetrain hardware available for Pro R-based builds.