Do the J's Racing Hyper Spring kits work with the FL5's adaptive dampers?

Yes. The J's Racing Hyper Spring set was developed specifically for the FL5's factory adaptive dampers and standard tire sizes, and the car's three-mode switching between +R, Sport, and Comfort continues to work exactly as designed.

How much does the car drop?

25mm at the front and 20mm at the rear, enough to close the fender gap and lower the center of gravity meaningfully while preserving usable suspension travel on the stock dampers.

What are the spring rates?

The progressive fronts run 3.5 to 5.0 kgf/mm against the factory 4.8, and the rears run 2.5 to 4.5 kgf/mm against the factory 4.4. The progressive design rides gently at street loads and firms up as load builds.

What else comes in the box?

The set includes all four springs plus model-specific bump rubbers and silent rubber, which must be installed with the springs for the suspension to work as engineered.

Will they wear out my stock dampers faster?

The rate windows were chosen to stay within what the factory adaptive dampers control comfortably, which is exactly why J's Racing develops a dedicated spring per chassis rather than one universal drop spring.

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Description

J’s Racing Hyper Spring Lowering Springs for FL5 Honda Civic Type R [HSP-L5]

The J’s Racing Hyper Spring set for the FL5 Honda Civic Type R lowers the car 25mm in front and 20mm in the rear without fighting the factory suspension. The progressive rates are engineered specifically around the FL5’s adaptive dampers and standard tire sizes, so the +R, Sport, and Comfort modes keep doing their jobs while the stance, center of gravity, and initial response all improve.

Design and Performance

Progressive winding lets the springs ride comfortably at street loads, then firm up as they compress under cornering and braking. The front springs run 3.5 to 5.0 kgf/mm against the factory 4.8, and the rears run 2.5 to 4.5 kgf/mm against the factory 4.4, a window tuned to work with the stock dampers rather than overwhelm them. Dedicated bump rubbers and silent rubber are included and must be fitted with the springs.

Features

Dedicated bump rubbers and silent rubber included
Designed for the factory adaptive dampers and standard tire sizes
Progressive rates preserve ride quality at street loads
Retains the FL5’s three-mode damper switching (+R / Sport / Comfort)
Zinc powder coating for corrosion resistance

Specifications

Front Spring Rate: 3.5-5.0 kgf/mm progressive (OEM: 4.8 kgf/mm)
Rear Spring Rate: 2.5-4.5 kgf/mm progressive (OEM: 4.4 kgf/mm)
Front Drop: 25 mm
Rear Drop: 20 mm
Material: Super-strength steel, 200kg-class tensile strength
Finish: Zinc powder coating

What’s Included

Bump rubbers, model-specific (x1 set)
Hyper Springs, front and rear (x4)
Silent rubber (x1 set)

Applications

Honda Civic Type R: FL5 | 2023-present | 2.0L K20C1 Turbo

Notes

A wheel alignment is recommended after installation
The included bump rubbers and silent rubber must be fitted with the springs
For spring and damper pairing advice, contact us

Frequently Asked Questions

Do the J’s Racing Hyper Spring kits work with the FL5’s adaptive dampers? Yes. The J’s Racing Hyper Spring set was developed specifically for the FL5’s factory adaptive dampers and standard tire sizes, and the car’s three-mode switching between +R, Sport, and Comfort continues to work exactly as designed.
How much does the car drop? 25mm at the front and 20mm at the rear, enough to close the fender gap and lower the center of gravity meaningfully while preserving usable suspension travel on the stock dampers.
What are the spring rates? The progressive fronts run 3.5 to 5.0 kgf/mm against the factory 4.8, and the rears run 2.5 to 4.5 kgf/mm against the factory 4.4. The progressive design rides gently at street loads and firms up as load builds.
What else comes in the box? The set includes all four springs plus model-specific bump rubbers and silent rubber, which must be installed with the springs for the suspension to work as engineered.
Will they wear out my stock dampers faster? The rate windows were chosen to stay within what the factory adaptive dampers control comfortably, which is exactly why J’s Racing develops a dedicated spring per chassis rather than one universal drop spring.

About J’s Racing

J’s Racing is one of Japan’s most respected Honda tuning houses, developing parts the hard way: on real race tracks in Super Taikyu endurance competition and time attack rather than on paper. From aero and titanium exhausts to suspension and driveline components, every product carries lessons learned from decades of racing Hondas at the limit. Bulletproof Automotive imports J’s Racing parts directly from Japan, bringing authentic, race-proven JDM engineering to enthusiasts in the US and worldwide.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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J’s Racing Hyper Spring Lowering Springs for FL5 Honda Civic Type R [HSP-L5]

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J’s Racing Hyper Spring Lowering Springs for FL5 Honda Civic Type R [HSP-L5]

Design and Performance

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About J’s Racing

Reviews