
SCEPTER SERIES
for Metric bikes

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.
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 system
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Adjustment Range:
Preload: 15 mm
Compression: 28 ±3 clicks
Rebound: 28 ±3 clicks
※ Settings may vary. Refer to actual product.
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Spring Options:
6 N/mm
(YAMAHA YZF R15)
6.5 N/mm
(YAMAHA YZF R3/R15、KAWASAKI Ninja 400、HONDA CBR 250RR 2017~2022)
7 N/mm
(YAMAHA YZF R3/R15、KAWASAKI Ninja 400、HONDA CBR 250RR 2017~2022)
7.5 N/mm
(YAMAHA YZF R3/R15、KAWASAKI Ninja 400、HONDA CBR 250RR 2017~2022、KTM RC390)
8 N/mm
(YAMAHA YZF R3/R15、KAWASAKI Ninja 400、HONDA CBR 250RR 2023~、KTM RC390、CFMOTO 450SR)
8.5 N/mm
(CFMOTO 450SR、KTM RC390)
9 N/mm
(CFMOTO 450SR、KTM RC390)
DIMENSION DRAWING

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.