top of page
SCEPTER25_13.png

SCEPTER25

for Harley-Davidson

SCEPTER25_X2.png

NITROGEN CHAMBER 

RACINGBROS' oil/gas separation system, filled with pressurized nitrogen, ensures continuous damping for the most reliable riding experience.

Cr-Si STEEL SPRING 

The SCEPTER series utilizes super high-strength Japan Cr-Si steel springs, guaranteeing robustness and an outstanding lifecycle.

CARTRIDGE SYSTEM

RACINGBROS' high-performance cartridge design makes bike installation easier for all riders. Featuring a CNC-machined damping piston with a 25 mm diameter, crafted from high-quality 7075-T6 aluminum alloy, it takes stability to another level.

SCEPTER25_10.png

2-INCH EXTENSION COMPATIBLE

Total length extended by 2 inches via a specially designed spacer. Compatible with 49 mm fork diameter Dyna, Street Bob, and Touring FLH/FLT models only. Please refer to the compatibility product list (link) for detailed information.

FEATURES / SPECS

◦ JIS G3560 Cr-Si high-rigidity steel spring, 5–8% lighter than standard springs

 

◦ Fully sealed cartridge system

◦ Nitrogen chamber

◦ Oil/Gas separation tech

◦ Type III military-grade anodized coating

◦ IFP*/coil-energized compression valve
* Internal Floating Piston

◦ Speed Adaptive Valving

 

---

 

Adjustment Range:
Preload: 15 mm
Compression: 28 clicks ±3
Rebound: 28 clicks ±3

※ Settings may vary. Refer to actual product.

COMPATIBILITY

Harley-Davidson

Softail Low Rider ST
Softail Low Rider S
Sportster
Touring
Dyna

DIMENSION DRAWING

SCEPTER25_11.png

The eye-to-eye length (marked as 'L') and mounting configurations may vary depending on the vehicle’s make, model, year, and customization. All products are custom-made by each distributor. Please consult your distributor to confirm the correct specifications for your setup.

OUR PARTNERS

DISTRIBUTORS

Reach out to our authorized distributors for product specifications and expert assistance.

Open nationwide map search

RACINGBROS_LOGO_AOS_10DEC25-01.png

If you have any questions, please click the Inquiry Form button below. Our team is ready to assist you and looks forward to supporting your needs.

SITEMAP

MTB

SERVICE_KITS

E-MOTO

​FRONT

SCOUT43

​REAR

SHICANE_HLR_SUR_RON_ULTRA_BEE

DISTRIBUTORS - GLOBAL MOTORSPORT    |    MTB    |    TDM

© 2026 RACINGBROS INTERNATIONAL INC

bottom of page