Used parts for the 2020-present Polaris Slingshot Gen 2 are available at Sun Coast Cycle Sports. The Gen 2 Slingshot replaced the GM Ecotec engine with a Polaris-designed 2.0L ProStar four-cylinder producing 178-203 hp (depending on variant), and introduced the AutoDrive automated manual transmission as an alternative to the standard 5-speed manual. Updated body panels, a redesigned cockpit, and a 7-inch Ride Command infotainment display brought the Slingshot into the modern era. Our Odessa, Florida technicians strip each Gen 2 Slingshot donor, photograph every component under a unique SKU, and ship free throughout the lower 48.
Slingshot Gen 2 generation and parts compatibility
| Model | Years | Engine | Power | Transmission |
|---|
| Slingshot S / SL / R | 2020+ | 2.0L ProStar DOHC I4 | 178 hp (S/SL) / 203 hp (R) | 5-speed manual or AutoDrive AMT |
| Slingshot Grand Touring | 2020+ | 2.0L ProStar DOHC I4 | 178 hp | AutoDrive AMT standard |
The Gen 2's 2.0L ProStar engine is a Polaris-proprietary design that shares no components with the Gen 1's GM Ecotec. Engine internals, ECU, exhaust, and intake are all specific to the ProStar four-cylinder. The R variant produces 203 hp through a factory performance tune and higher-flow intake, compared to 178 hp in the S, SL, and Grand Touring models. The engine block is shared across all Gen 2 variants; the R's additional power comes from ECU calibration and intake differences.
The AutoDrive transmission is an automated manual gearbox that shifts automatically but uses a clutch mechanism rather than a traditional torque converter. It is a completely different unit from the standard 5-speed manual. AutoDrive and manual transmission components do NOT interchange. The AutoDrive requires its own specific clutch, hydraulic components, and electronic controls.
Gen 2 body panels, cockpit components, and many exterior accessories are redesigned and do NOT fit Gen 1 Slingshots. The chassis architecture shares DNA with Gen 1 but body mounting points and panel geometry changed for the 2020 redesign. Some suspension and brake components may have limited cross-generation compatibility, but verify by part number.
Common Slingshot Gen 2 failure points and replacement parts
AutoDrive transmission calibration (AutoDrive models): The AutoDrive automated manual transmission can exhibit rough shifts or delayed engagement, particularly in cold weather. Dealer software updates and TCM (transmission control module) recalibration improve shift quality. This is specific to AutoDrive-equipped models; the manual transmission does not have this issue.
Belt drive wear: The carbon-fiber reinforced belt final drive continues from Gen 1 and requires the same periodic inspection and eventual replacement. Driving style significantly affects belt life.
Open cockpit exposure and electronics: Same exposure concerns as Gen 1. The Gen 2's larger Ride Command touchscreen display and additional electronic features increase the importance of weather protection during storage. Water intrusion to the infotainment system is the most common electronic complaint.
Rear wheel bearing: The single-rear-wheel design continues to place elevated loads on the rear wheel bearing, requiring periodic inspection. This is inherent to the three-wheel configuration.
ProStar engine coolant system: The 2.0L ProStar engine is liquid-cooled and requires standard coolant maintenance including level monitoring and periodic flush. The open-air cockpit allows more debris to reach the radiator, making regular cleaning important.
Commonly replaced Slingshot Gen 2 parts
- Belt final drive
- AutoDrive clutch and hydraulic components (AMT models)
- Rear wheel bearing
- Body panels and fenders (redesigned for Gen 2)
- Ride Command infotainment display
- Windshield and wind deflectors
- Front suspension ball joints and tie rods
- Brake pads and rotors
- Interior trim and seat covers
Frequently asked questions
Q: Will Gen 1 Slingshot parts fit the Gen 2?
No, for most components. The Gen 2 uses a different engine (Polaris ProStar vs GM Ecotec), redesigned body panels, and an updated cockpit. Some suspension and brake components may have limited cross-generation compatibility, but engine, transmission, body, and electronics are generation-specific. Always specify Gen 1 (2015-2019) or Gen 2 (2020+) when ordering parts.
Q: What is the difference between the manual and AutoDrive transmission?
The manual is a conventional 5-speed with a clutch pedal. The AutoDrive is an automated manual gearbox that shifts itself but uses a clutch mechanism (not a torque converter). AutoDrive allows paddle shifting or fully automatic operation. The two transmissions are completely different units; internal components, clutch assemblies, and electronic controls do not interchange between manual and AutoDrive models.
Q: Can I source Gen 2 ProStar engine parts from GM?
No. Unlike the Gen 1's GM Ecotec engine, the Gen 2's 2.0L ProStar is a Polaris-proprietary design. Engine parts must be sourced through Polaris's parts network, Polaris dealers, or from used Slingshot donors like Sun Coast's inventory. The ProStar four-cylinder is not shared with any GM or other third-party vehicle.
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