Description
Product Overview
The SPI rear shock is engineered for snowmobile enthusiasts who demand reliable performance in harsh winter conditions. Constructed from high‑grade metal, this shock provides exceptional strength while maintaining a lightweight profile of just 3.35 pounds. Its modern design extends 13 inches in open length and 9½ inches when closed, ensuring optimal rear‑end stability. The black exterior finish not only looks sleek but also resists corrosion and wear. Manufactured in Taiwan to SPI’s strict quality standards, the unit matches OEM part number 503190663, guaranteeing a perfect fit for a wide range of snowmobile models.
Usage
Designed for rear‑mount installation, this shock is ideal for both recreational riders and competitive racers who navigate deep snow, icy trails, and rugged backcountry terrain. Its extended length improves shock absorption, reducing vibration and enhancing rider comfort during long runs. Whether you’re tackling steep hills or cruising on flat snowfields, the SPI rear shock delivers consistent performance, making it a versatile upgrade for any snowmobile setup.

Why Choose Us
SPI’s reputation for precision engineering and durable components sets this rear shock apart from generic alternatives. Each unit undergoes rigorous testing to meet automotive and powersports standards, ensuring it can withstand extreme temperatures and repeated stress cycles. The shock’s metal construction offers superior longevity compared to plastic or composite rivals, and the Taiwanese manufacturing process adheres to ISO‑9001 quality management protocols. With a proven track record reflected in a 4.1‑star rating from verified customers, you can trust this product to perform season after season.
Key Features
- Durable metal construction for long‑lasting performance
- Modern 13‑inch open length enhances rear suspension stability
- Black exterior finish resists corrosion and matches most snowmobile designs
- Direct OEM replacement (503190663) ensures perfect fit and easy installation
- Manufactured in Taiwan under strict ISO‑9001 quality control
FAQ
Does this shock fit all snowmobile models?
The SPI rear shock is designed to replace OEM part number 503190663, which is compatible with many popular snowmobile makes and models. Always verify your vehicle’s specifications before purchase.
What tools are needed for installation?
Standard hand tools such as wrenches and socket sets are sufficient. The shock comes with all necessary mounting hardware for a straightforward rear‑mount installation.
Is the shock covered by a warranty?
Yes, SPI provides a limited one‑year warranty covering manufacturing defects. Register your product on the SPI website to activate warranty protection.
Can this shock be used in extreme cold temperatures?
Absolutely. The metal construction and sealed design are engineered to operate reliably in sub‑zero conditions without loss of performance.
How does the extended length affect handling?
The 13‑inch open length offers greater shock travel, which translates to smoother absorption of bumps and improved rear‑end traction, especially on uneven or deep snow surfaces.





Playmobil Tractor Toy Figure for Kids 4-10 Years
Rear Shock Absorber ZUDKSUY Steel Heavy Design
Reviews
There are no reviews yet.