JMP Shock Absorber Spring - 80.0N - 743.00.68
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Product Information
Full details
The JMP 80.0N shock absorber spring is designed for serious motorcycle enthusiasts and track riders who demand precise chassis handling and consistent suspension performance. This linearly wound component excels at providing a responsive, predictable ride quality under various road conditions; however, it requires a solid understanding of suspension geometry to ensure the 80.0N spring rate matches your specific motorcycle weight and riding style.
All features
| Model Part Number | 743.00.68 |
|---|---|
| Brand | JMP |
Extended Product Information
FAQs
What does the 80.0N rating mean?
This refers to the spring rate, meaning it requires 80 Newtons of force to compress the spring by one millimeter.
Is this spring compatible with all motorcycle shocks?
No, it must match the specific diameter, free length, and seating requirements of your existing shock assembly as outlined by DIN 2095 standards.
Do I need special tools to install this?
Yes, you should use a motorcycle shock spring compressor to safely remove the old spring and install the JMP unit.
How often should I check my suspension spring?
It is recommended to inspect your suspension components during every major service interval or at least twice a year.
Can this spring be used for off-road riding?
While durable, this spring is primarily engineered for on-road and track chassis tuning; off-road use may require different damping profiles and spring characteristics.
What is the benefit of a linear spring compared to a progressive one?
A linear spring provides a predictable, consistent feel throughout its travel, which is preferred by track riders who want reliable feedback from the suspension.
Troubleshooting
Excessive suspension noise or clicking during compression.
Ensure the flattened ends of the spring are seated correctly in the shock retainers and that no debris is trapped between the coil and the mount.
Spring feels too stiff or too soft after installation.
Re-evaluate the sag settings. If the spring rate is fundamentally mismatched, you may need a different rate spring (e.g., higher or lower than 80.0N) to match the bike's weight.
Signs of surface rust appearing on the spring.
The protective coating may have been compromised during installation. Clean the area with a mild solvent and apply a high-quality protective clear coat or touch-up paint.
Pros and Cons
Pros
- High-quality linear performance for track and road use
- Excellent durability due to heat-treating and protective coatings
- Easy to install due to standard DIN 2095 dimensions
- Consistent compression feedback
- Resistant to environmental wear
Cons
- Requires professional installation tools like a spring compressor
- Limited adjustment range if not matched correctly to rider weight
- Requires specific chassis knowledge for optimal tuning
Setup, Compatibility & Care
Before installation, verify that the 80.0N spring rate is compatible with your motorcycle's linkage ratio and total weight. Installation must be performed using a dedicated motorcycle shock spring compressor to safely manage the pre-load. Never attempt to compress the spring using improvised tools, as this can result in injury or spring damage. For care, visually inspect the powder coating during every oil change; if you notice chips or deep scratches, apply a thin layer of touch-up paint or anti-corrosion spray to maintain the integrity of the steel. Keep the spring free of heavy grit or abrasive materials to ensure the shock movement remains smooth and silent.