SimNet Hydro-link Pro Kit (A-HPK) for SP Pedal and SHB Handbrake

SimNet Hydro-link Pro Kit (A-HPK)

The SimNet Hydro-link Pro Kit (A-HPK / HPK-A) brings true hydraulic resistance and modulation to your simracing brake system by using a compact master cylinder + slave cylinder hydro body, combined with a tunable two-stage stack. Designed to integrate with SimNet SP Pro Load Cell pedals and the SimNet SHB-100 Load Cell handbrake, it lets you shape pedal feel from soft initial bite to firm lock-up for a more realistic cockpit.

Main Features

• Real hydraulic brake feel: feel the direct resistance of hydraulic fluid as you apply pressure.
• Hydro body with Master Cylinder + Slave Cylinder design for realistic modulation.
• Two-stage brake design: mix and match springs and elastomers to build your ideal resistance curve.
• Multiple stack configurations: one spring, two springs, spring + elastomer, or two elastomers.
• Wide tuning range using different spring rates and elastomer hardness levels.
• Preload adjustment via the slave cylinder cap for consistent pedal feel.
• Includes dedicated mounting plates for pedals and handbrake for a clean cockpit install.
• Built for advanced simracing control and repeatable inputs in competitive driving.

Technical Specifications

• Product Type: Hydraulic link / brake feel upgrade kit (hydro module + tunable stack)
• Hydraulic Module: Master Cylinder + Slave Cylinder (upright installation)
• Tuning Concept: Two-stage stack (springs + elastomers)
• Spring Options Included (rate / length): 32 kg, 54 kg, 78 kg, 116 kg in 55 mm and 25 mm
• Elastomers Included: 70A and 80A (with an extra piece of each type included)
• Spacer Set Included (for stack building): Spacer A (Convex-Convex), B (Convex-Flat), C (Convex-Concave), D (Concave-Flat), E (Concave-Concave)
• Initial Setup Guidance: slave cylinder cap to maximum preload (5 mm position) before first use or after stack changes

What’s in the Box

• Hydro body (Master Cylinder + Slave Cylinder assembly)
• Metal plates for pedals (mounting set)
• Metal plates for handbrake (mounting set)
• 70A elastomers (set) + 80A elastomers (set) (includes one extra piece of each type)
• Spring sets: 32 kg / 54 kg / 78 kg / 116 kg in 55 mm and 25 mm lengths
• Spacer set for stack configurations: A / B / C / D / E
• Tool kit: 2× Allen keys, mounting bolts, aluminum standoffs, and installation bushings/washers

Compatibility & Accessories

Compatible with: SimNet SP Pro Load Cell pedals and SimNet SHB-100 Load Cell handbrake.

Installation tips for best results: use a rigid simracing cockpit (especially aluminum profile rigs) to maintain consistent pedal geometry and improve feedback precision. This kit is a perfect match for high-end setups built around a direct drive wheelbase, a racing dashboard, a shifter/handbrake combo, and a quick release (QR) steering wheel ecosystem.

Important notices (use & maintenance):

• Do not operate the A-HPK repeatedly without a proper stack/load installed. The kit is supplied without a stack/load pre-installed.
• If the slave cylinder piston gradually extends outward during empty operation, press the piston back by hand into its original position.
• Upright installation only. Do not install or use in an inverted (upside-down) position.
• On first use or after changing stacks, set the slave cylinder cap to maximum preload (5 mm position) to ensure the piston is fully seated.
• Keep the slave cylinder clean and free from dust/debris for smooth operation and long service life.
• Elastomers are consumable parts (wear items) and are not covered under warranty.

Benefits

Real hydraulic resistance for authentic braking feel. Highly tunable two-stage response with springs and elastomers. Cleaner modulation for trail braking and consistent lap-to-lap performance. Professional cockpit integration for advanced simracing pedals and handbrake control.