Harddrive Scepter Heavy-Duty 39mm Option Spring - Harley & Indian V-Twin
About Harddrive
Harddrive is the house performance and replacement line built for American V-twins, covering everything from engine hardware and electrical to controls, lighting and chassis parts. The range is aimed squarely at Harley-Davidson and Indian riders who want a direct-fit part without dealer pricing, and it spans decades of model years — from Evolution-era Softails to current Milwaukee-Eight baggers.
Enhance your V-twin's load-carrying capacity and achieve a firmer ride with the Harddrive Scepter heavy-duty 39mm option spring. This robust replacement spring is designed for riders who demand more from their suspension, whether for two-up riding or heavy gear.
Why riders pick this
- Heavy-duty 39mm spring rate for stiffer ride
- Improved load-carrying capacity
- Direct OEM-spec replacement
- Enhances V-twin suspension performance
The Harddrive Scepter heavy-duty 39mm option spring offers a significant upgrade over standard springs, providing a stiffer rate that's ideal for performance-oriented riders or those who frequently carry extra weight. It's a direct OEM-spec replacement, ensuring compatibility and reliable performance on your Harley-Davidson or Indian Motorcycle.
Enhanced Performance and Load Support
- Heavy-duty 39mm spring rate for increased stiffness
- Improves load-carrying capacity for two-up riding or luggage
- Direct OEM-spec replacement for straightforward installation
- Designed for V-twin motorcycle suspension systems
Tuning Your V-Twin Suspension
Upgrading to a heavy-duty option spring like the Harddrive Scepter can dramatically change your bike's feel and capability. While it's designed for direct replacement, proper suspension setup often involves checking sag and preload to optimize the ride for your specific weight and riding style. This spring is a solid foundation for riders looking to dial in their rear suspension for a more controlled and stable experience.
Specifications
- Brand: Harddrive
- Manufacturer Part #: R3050077
- UPC: 191361133244
- Spring Rate: 39mm (Heavy-duty)
- Length: 35 in
- Width: 5 in
- Height: 4.25 in
- Weight: 5.9 lbs
- Country of Origin: China (Taiwan)
Common questions
What's the difference between this heavy-duty spring and a standard rate?
This 39mm heavy-duty spring provides a stiffer suspension feel and better load-carrying capacity compared with lighter-rate standard springs. It's ideal for riders carrying passengers or heavy luggage.
Will this heavy-duty spring fit my Harley or Indian motorcycle?
This spring is designed for V-twin motorcycles. To ensure compatibility, we recommend confirming your bike's exact suspension type and mount geometry using our Shop by Bike tool before purchase.
Is professional installation required for this spring replacement?
Spring replacement can be complex. While direct replacement, ensuring proper preload and setup often benefits from professional installation or experience with suspension work.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Harddrive |
| TYPE | Suspension |
| SKU | 890-01251 |
| WEIGHT | 5.9 lb |
