Suzuki RM-Z Works Showa Fork Kit
MSRP: $3,500.00
$2,800.00
Exact Fitment Guarantee
The Suzuki RM-Z Works Showa Fork & Suspension Upgrade Kit is an elite suspension performance package engineered to transform the handling, plushness, and bottoming resistance of the Suzuki RM-Z250 and RM-Z450. The Suzuki RM-Z chassis is universally celebrated for having the sharpest turning geometry in motocross, but stock fork valving can feel harsh on high-speed square-edge bumps and prone to mid-stroke deflection. This Works Showa upgrade kit resolves this by replacing restrictive internal valving with genuine Works-spec hydraulic components.
The kit features precision CNC-machined Works Showa compression and rebound base valves, DLC-coated low-friction damper rods, high-flow piston assemblies, and custom-tuned progressive spring perches. The advanced piston valving incorporates larger port apertures and a tuned multi-stage steel shim stack that provides ultra-plush compliance over small braking bumps while generating massive hydraulic bottoming resistance during high-speed jump over-shoots. The reduced internal friction and refined damping curves allow the front wheel to stay glued to the track surface through rough ruts, eliminating handlebar deflection and delivering unparalleled rider confidence and front-end feedback.
- Damping Technology: Works Showa high-flow compression and rebound valve assemblies
- Piston Design: CNC-machined large-port aluminum pistons with precision micro-shims
- Rod Coating: Low-friction Diamond-Like Carbon (DLC) coating on damper cartridge rods
- Fluid Compatibility: Calibrated for Showa SS-19 / 5W synthetic suspension fluid
- Application: 49mm Showa twin-chamber spring fork platforms
### Step-by-Step Installation & Safety Protocols <div class="my-6 p-4 rounded-xl border bg-red-500/20 text-red-400 border-red-500/40 bg-opacity-30"><div class="flex items-center gap-2 font-black uppercase text-sm mb-1 tracking-wider"><svg class="w-5 h-5 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"></path></svg>Safety & Precision Warning</div><p class="text-sm text-gray-300 leading-relaxed">Safety & Installation Notice: Fork suspension rebuilding requires specialized suspension tools, including cartridge holding tools, seal drivers, and precision oil height measurement gauges. Improper assembly can cause fork binding or damping failure. Professional installation by a certified suspension specialist is highly recommended.</p></div> Installation involves removing the fork legs from the motorcycle triple clamps. Unscrew the fork top caps, drain the old fork fluid, and disassemble the internal damping cartridges using dedicated holding tools. Replace the OEM valving pistons with the Works Showa high-flow assemblies, setting the shim stack configuration according to your rider weight and skill level. Reassemble the cartridges using fresh low-friction seals and dust wipers. Fill the inner cartridge and outer chambers with high-grade 5W suspension fluid (such as Showa SS-19), bleed all air from the cartridge rod until stroke resistance is smooth and continuous, set the outer chamber oil volume, and torque top caps to 30 Nm. Reinstall fork legs into triple clamps, torquing clamp bolts to factory specifications.
### Maintenance & Bleeding Routine Maintenance involves bleeding excess air pressure from fork top-cap bleeders before every ride and changing fork oil every 20-30 race hours.
Frequently Asked Questions
Q: How does this kit eliminate the harsh feeling in stock RM-Z forks?
A: The Works Showa high-flow pistons allow oil to flow with less restriction during high-velocity impacts, eliminating hydraulic locking and absorbing square-edge chop without jarring the rider's wrists.
Q: Does this kit include springs for my weight?
A: The kit includes valving pistons, shims, and cartridge components; optional matched-rate Showa chrome-silicon fork springs can be selected based on rider weight.
Q: How often should I change fork oil with this Works kit?
A: For optimal damping performance and seal longevity, changing the outer chamber fork fluid every 20 operating hours is recommended for competitive motocross.
Q: Why is bleeding air from the fork caps important before every moto?
A: As forks stroke, internal heat and atmospheric pressure changes cause air pressure buildup in the outer chambers, making the forks feel progressively harsh on small bumps. Bleeding equalizes pressure to atmospheric baseline.