Upgrade the front suspension of your Yamaha Bolt or SCR950 with Hagon Progressive Fork Springs. Designed to improve front-end stability, reduce brake dive, and provide a more controlled ride, these springs offer a significant improvement over the factory fork springs while maintaining excellent comfort for daily riding and long-distance touring.

Unlike straight-rate springs, progressive springs become firmer as they compress, allowing the suspension to absorb small bumps comfortably while providing increased support during braking, cornering, and aggressive riding. The result is a more planted front end, improved rider confidence, and a motorcycle that feels more composed in a wide variety of riding conditions.

Whether you're commuting, touring, carving backroads, or pushing your limits farther than stock, Hagon Progressive Fork Springs help unlock the full potential of your Yamaha's front suspension.

Thunder House Moto highly recommends pairing these springs with Hagon Rear Shocks for a balanced front and rear suspension setup.

Fitment

Compatible with: 

Yamaha Bolt (XV950)

Yamaha Bolt R-Spec

Yamaha Bolt C-Spec

Yamaha SCR950

Features

Progressive spring rate design

Improved front-end stability

Reduced brake dive under braking

Improved cornering confidence

More controlled suspension movement

Designed specifically for the Yamaha Bolt platform

Manufactured by Hagon Suspension in the United Kingdom

Includes installation instructions

Includes spacers if required

2-Year Hagon Manufacturer Warranty

Specifications

Length: 12.6" (320mm)

Diameter: 1.35" (34.3mm)

Progressive Spring Rate: 6.5–8.5 kg/cm

Recommended Fork Oil: SAE 10W

Recommended Air Gap: 5.5" (140mm)

Installation Notes

Hagon recommends using SAE 10W fork oil with a 5.5" (140mm) air gap measured with the fork fully compressed and the springs removed.

The tighter wound coils should be installed facing upward.

Installation instructions are included with every spring kit.

Why Upgrade Your Fork Springs?

The factory fork springs are designed to accommodate a wide range of riders and riding conditions. Hagon Progressive Fork Springs provide increased support as the suspension compresses, helping reduce excessive front-end dive while maintaining a comfortable ride over rough roads.

Benefits include:

Improved ride quality

Better front-end support

Reduced brake dive

Improved cornering confidence

More predictable handling

Better balance when paired with upgraded rear suspension

Frequently Asked Questions

Will these raise my bike?

No. These springs are designed to improve suspension performance and support without significantly altering ride height.

What are progressive fork springs?

Progressive springs become firmer as they compress, providing a comfortable ride over small bumps while offering increased support during braking, cornering, and heavier suspension loads.

Do these work with Hagon rear shocks?

Yes. Thunder House Moto highly recommends pairing Hagon Progressive Fork Springs with Hagon rear shocks for a balanced suspension setup.

Are installation instructions included?

Yes. Hagon installation instructions are included with every spring kit.

Lead Time

Most Hagon suspension products are built to order. Typical lead time is approximately 1–2 weeks before shipping.

Product image shown may be representative. Actual spring appearance may vary slightly by application.