Upgrade to Heavy-Duty Primary Clutch & Puller Set 420280605 420280608 for Can Am Defender HD10 HD9 2016+Replacement Part Number: 420280605, 420280608, 420280609, 420280746, 420280662 Applications:Fit For all 2016-2023 Can-Am Defender HD10 models and 2021-2023 Defender HD9 models. Compatible with all packages, including XMR, MAX, PRO, DPS, and XT.Fit For Can-Am Side By Side Vehicle (UTV):2021 Defender HD8 Defender HD8 DPSD efender HD8 DPS CABD efender HD8 XTD efender MAX HD8 Defender MAX HD8 DPSD efender MAX HD8 XTM averick Trail 800 Maverick Trail 800 DPS2020 Defender HD8 Defender MAX HD8 Maverick Trail 800 Maverick Trail T 8002019 Defender HD10 XTD efender HD10 XT CABD efender HD8 XTD efender MAX HD10 XTD efender MAX HD8 Maverick Max 1000R Turbo Maverick Trail 800 DPST raxter HD8 T1B2018 Defender HD10 XTD efender HD10 XT-PD efender HD8 Defender MAX HD10 Lone Star Defender MAX HD10 XTD efender MAX HD8 XTM averick Trail 800 Maverick X3 900 HOT raxter HD10 Traxter HD8 Traxter T HD10 Traxter T HD82017 Defender HD8 DPSD efender MAX HD10 DPSM averick 1000R DPSM averick 1000R Turbo2016 Defender HD10 Defender HD8 Traxter HD8 Description:For a new Mother Clutcher HD primary clutch and puller tool designed for 2016-2023 Can-Am Defender HD10 and the 2021-2023 Defender HD9 models.This clutch is constructed using the robust Maverick X3 components, which have been modified to ensure compatibility with and easy installation on a Defender HD10. The result is a primary clutch that is ready to bolt on and use, rated for more than double the horsepower of the Defender HD9 & HD10 clutch. Upgraded features include reinforced towers with steel-plated slides to prevent button wear on the aluminum housing, as well as a stronger X3-style top cover (also known as the Governor cup assembly).Despite being significantly tougher than the HD8 clutch, this clutch comes pre-tuned for the Defender HD10 and 2021-2023 HD9 models. This upgrade allows the engine to rev up slightly higher, unlocking more mid-range to full-throttle torque and power. Mid-throttle RPM s are approximately 400 RPM s higher, and at full throttle, this clutch is tuned 600-800 RPM s higher than stock until speeds exceed 55 mph. Beyond 55 mph, the top end aligns with the primary clutch, maintaining RPM s between 7200-7500.