Customer Ratings
Customer Reviews
⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M.
⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy
⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis
⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric
Straightline 129-137" Track Complete Trail Performance Kit 0-3000ft (Straightline and stock exhaust)
$470.73
Questions? Call or text us at:1-888-927-3076
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Customer Reviews
⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M.
⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy
⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis
⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric
The most tunable and precise kit on the market for your Polaris.
Comes complete with Straightline's premier weight tuning kit that uses either magnets, or complete nut and washers for a more precise tuning. The kits come complete with a very precise baseline that rarely needs to be changed.
Trail version kits drastically improve acceleration, MPH, and backshift.
The off trail kits are designed for the backcountry low elevation rider. These kits are a huge gain as they are precisely designed for this application improving the entire all around riding experience of throttle response and backshift.
Mountain specific kits are designed to hold a perfect rpm while climbing, improved track speed, and instant backshift for instant response power to the track.
Kits come complete with clutch weight kit, custom helix, primary spring, and secondary spring.
Brand: Straightline
Part Number: 123-154
Fitment:
- 2021 Polaris Indy 850 Adventure 137in AXYS
- 2021-2026 Polaris Indy 850 Adventure 137in MATRYX
- 2021 Polaris Indy 850 VR1 129in AXYS
- 2021-2026 Polaris Indy 850 VR1 129in MATRYX
- 2021 Polaris Indy 850 VR1 137in AXYS
- 2021-2026 Polaris Indy 850 VR1 137in MATRYX
- 2021 Polaris Indy 850 VR1 Dynamix 137in AXYS
- 2021-2026 Polaris Indy 850 VR1 Dynamix 137in MATRYX
- 2021 Polaris Indy 850 XC 129in AXYS
- 2021-2026 Polaris Indy 850 XC 129in MATRYX
- 2021 Polaris Indy 850 XC 137in AXYS
- 2021-2026 Polaris Indy 850 XC 137in MATRYX
- 2021 Polaris Indy 850 XC Launch Edition 129in AXYS
- 2021-2026 Polaris Indy 850 XC Launch Edition 129in MATRYX
- 2021 Polaris Indy 850 XC Launch Edition 137in AXYS
- 2021-2026 Polaris Indy 850 XC Launch Edition 137in MATRYX
- 2021 Polaris Indy 850 XCR AXYS
- 2021-2026 Polaris Indy 850 XCR MATRYX
- 2021 Polaris Indy 850 XCR 128in AXYS
- 2021-2026 Polaris Indy 850 XCR 128in MATRYX
- 2021 Polaris Indy 850 XCR 136in AXYS
- 2021-2026 Polaris Indy 850 XCR 136in MATRYX
- 2021 Polaris Switchback 850 Pro S AXYS
- 2022-2026 Polaris Switchback 850 Pro S MATRYX
- 2021 Polaris Switchback 850 XC 146in AXYS
- 2022-2026 Polaris Switchback 850 XC 146in MATRYX
- 2021 Polaris Switchback 850 XCR AXYS
- 2022-2026 Polaris Switchback 850 XCR MATRYX
- 2025-2026 Polaris Titan 850 Adventure Ultimate 155in 1.5
- 2025-2026 Polaris Titan 850 Adventure Ultimate 155in 1.8
Note: Image is for reference only, actual product may vary slightly.