Len Performance Rear Track Shock, Ski-Doo Expedition / Renegade 137 / Freeride 137 / MXZ Adrenaline 137 2014–2026 (54-80003R)
Len Performance Rear Track Shock, Ski-Doo Expedition / Renegade 137 / Freeride 137 / MXZ Adrenaline 137 2014–2026 (54-80003R)
Len Performance
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Product details
Len Performance LS4-80003R rebuildable rear track shock for the rear suspension on the Ski-Doo Expedition 600 HO / Xtreme 800R / 850 / 900 ACE Turbo R (2016–2025), Freeride 800R and 850 137 (2014–2020), Renegade 137 X, X-RS, Adrenaline and Enduro (2015–2023), the 2022–2026 Renegade Adrenaline 900 ACE / Turbo / Turbo R 137 and the 2024–2026 MXZ 600R / 850 Adrenaline 137. It replaces the factory rear track shock with a reservoir shock that has 5-click compression adjustment, and it is the broadest-fitting Ski-Doo track shock in the Len Performance line. At $441.95 each, it is A2D's value pick for a rebuildable, adjustable reservoir rear track shock: clicker adjustment, a reservoir and a serviceable design without the cost of a race-level shock.
The rear track shock sets how the skid handles big hits, G-outs and bottoming with a passenger or gear on the tunnel. This is a springless, long-stroke (169 mm) unit that works with the factory rear torsion springs, so it drops in without changing the rest of the skid.
Fitment. Sold each. Pairs with the Len Performance 54-80003F front track shock on the Expedition (Len Performance kit LS4-80003K), or with the 54-80000F front track shock on the 2015–2021 Renegade 137. Matching ski shocks: 54-80002 (Expedition) or 54-80001-1LH / RH (Renegade 137). Despite the distributor's "SD / Lynx" description, Len's lookup lists no Lynx model for this part. Platform: Ski-Doo REV-XU and REV Gen4 wide-body (Expedition), REV-XM and Gen4 (Freeride 137), REV-XS and Gen4 (Renegade 137) and Gen5 (2024–2026 Renegade Adrenaline 900 ACE 137 and MXZ Adrenaline 137).
Fitment list (Len Performance year/model lookup)
- Expedition: 2016-2018 Expedition 600 HO; 2016-2019 Expedition Xtreme 800R E-TEC; 2020-2025 Expedition Xtreme 850 E-TEC; 2023-2025 Expedition Xtreme 900 ACE Turbo R
- Freeride: 2014-2017 Freeride 800R E-TEC 137; 2018-2020 Freeride 850 E-TEC 137
- MXZ: 2024-2026 MXZ 600R E-TEC Adrenaline 137; 2024-2026 MXZ 850 E-TEC Adrenaline 137
- Renegade: 2017 Renegade 1200 4-TEC X 137; 2016-2017 Renegade 600 H.O. E-TEC X-RS 137 rMotion; 2017-2018 Renegade 600 H.O. X E-TEC 137; 2015-2017 Renegade 800R E-TEC X 137; 2015-2017 Renegade 800R E-TEC X-RS 137 rMotion; 2017-2020 Renegade 850 E-TEC X 137; 2017-2020 Renegade 850 E-TEC X-RS 137; 2019-2020 Renegade 900 ACE Turbo X 137; 2019-2020 Renegade 900 ACE Turbo X-RS 137; 2017 Renegade 900 ACE X 137; 2017 Renegade Adrenaline 1200 4-TEC 137; 2015-2018 Renegade Adrenaline 600 H.O. E-TEC 137; 2019, 2022-2023 Renegade Adrenaline 600R E-TEC 137; 2016-2018 Renegade Adrenaline 800R E-TEC 137; 2019-2023 Renegade Adrenaline 850 E-TEC 137; 2019 Renegade Adrenaline 850 E-TEC X-RS 137; 2017, 2022-2026 Renegade Adrenaline 900 ACE 137; 2022-2026 Renegade Adrenaline 900 ACE Turbo 137; 2022-2026 Renegade Adrenaline 900 ACE Turbo R 137; 2019-2020 Renegade Adrenaline X 600R E-TEC 137; 2018 Renegade Enduro 600 H.O. E-TEC 137; 2019-2021 Renegade Enduro 600R E-TEC 137; 2019-2021 Renegade Enduro 850 E-TEC 137; 2016 Renegade Sport 600 ACE 137
Features
- 5-click compression adjustment, tool-free.
- Aluminum reservoir shock: the remote-style reservoir keeps oil temperature down and damping consistent on long pulls.
- Fully rebuildable, serviceable shock. Len Performance rebuild kits and replacement parts are available.
- Hardened chromoly shaft for strength and seal life.
- Forged aluminum eyelet heads with premium steel and NBR bushings.
- Sold each.
Specifications
| Part number | 54-80003R (Len Performance LS4-80003R) |
| OEM part number replaced | 503194217 (per distributor listings) |
| Shock location | Rear track shock (rear suspension) |
| Chassis / platform | Ski-Doo REV-XU / REV-XM / REV-XS / REV Gen4 / Gen5 |
| Adjustments | Compression (5) |
| Length, extended | 550 mm / 21.66 in |
| Length, compressed | 381 mm / 15 in |
| Stroke | 169 mm / 6.65 in |
| Spring | None (uses the factory torsion springs) |
| Top eyelet | 15.85 mm ID (0.62 in); width 20 mm / 0.79 in per Lionparts |
| Bottom eyelet | 8 mm ID x 20 mm wide (0.32 in x 0.79 in) |
| Weight | 4.45 lb |
| Includes | One shock |
| Rebuild kit | Len Performance rebuild kits available; call to confirm the kit number for this shock |
| Sold | Each |
Ordering and installation. Sold each. Ships from stock at our Anchorage shop, or from our distributor's Boise, Idaho warehouse when not on the shelf. In-store pickup is available at checkout. Installation and shock setup are available at A2D Motorsports; call (907) 306-3062 to schedule. Len Performance rebuild kits are available, so the shock can be serviced or re-valved rather than replaced.