Every kit, every option, and which one belongs on your race car.
The Bosch Motorsport ABS M5 is the benchmark motorsport anti-lock braking system for racers who demand maximum braking performance, consistency, and driver confidence. Built for competition use only, it replaces the previous M4 platform with faster processing, improved wheel slip control, and extensive vehicle calibration. Available in Kit 1/2, Clubsport, and Porsche Cup-specific configurations, it supports FWD, RWD, and AWD race cars from factory GT3 and GT4 programs to club racing, time attack, hill climb, and custom builds.
Four configurations, one platform. Here's how they stack up.
| Feature | Kit 1 / 2 | Clubsport | Porsche 991 Cup | Porsche 996/997 |
|---|---|---|---|---|
| Wiring harness | Custom-built for the application | OEM-style, included | 991 Cup-specific | 996/997-specific |
| Plug & play fit | Brake lines required | Brake lines required | 991.1/991.2 only, brake lines required | 996 or 997 only, brake lines required |
| Wheel speed sensor connectors | Standard (Kit 1) / Mil-spec (Kit 2) | Standard | Factory sensors, not included | Porsche-specific |
| Downforce-dependent slip | Optional | No | No | No |
| Lateral deceleration slip | Optional | No | No | No |
| Inside wheel slip reduction | Optional | No | No | No |
| Wheel speed sensors | 4× DF11 (I, S, or V) | 4× DF11 (I, S, or V) | Factory sensors (not included) | 4× DF11S, Porsche-specific |
| CAN bus speed | 1 Mb/s or 500 Kb/s | 1 Mb/s or 500 Kb/s | 1 Mb/s | 1 Mb/s |
| Price | $12,231.00 | $8,430.00 | $13,195.00 | $13,195.00 |
| Component | Specification |
|---|---|
| ABS hydraulic unit | Integrated ECU, dust- and vibration-proof housing |
| Mounting bracket | Four-leg, high-strength mount |
| Brake pressure sensors (qty 2) | Bosch 260 bar (0265.545.040) |
| Yaw / acceleration sensor | Bosch Motorsport MM5.10 (ABS-specific) |
| Function switch | Driver-adjustable 12-position rotary switch |
| ABS warning light | MIL-spec red LED |
Clubsport is a universal, ready-to-run harness. Kit 1 and Kit 2 are built around your car, with the same advanced control strategies available on both.
| Clubsport | Kit 1 | Kit 2 | |
|---|---|---|---|
| Wiring harness | OEM-style, included | Custom vehicle-specific, built in-house | Custom vehicle-specific, built in-house |
| Wheel speed sensor connectors | Standard | Standard | Mil-spec |
| Advanced control strategies (downforce-dependent slip, lateral deceleration slip, inside wheel slip reduction, ABS off, CAN map selection, flexible CAN integration) |
Not available | Available | Available |
| Professional Bosch calibration (configured by Bosch Motorsport engineers, additional cost) |
Not available | Available | Available |
The only functional difference between Kit 1 and Kit 2 is the wheel speed sensor connector: Kit 1 uses standard connectors, Kit 2 uses mil-spec connectors. Both unlock the same advanced control strategies and both are eligible for Bosch engineer calibration.
| Feature | What It Does |
|---|---|
| Downforce-dependent slip | Adjusts wheel slip targets based on aerodynamic load, so the system accounts for how much downforce is pressing the tires into the track at a given speed. |
| Lateral deceleration slip | Optimizes ABS intervention during high lateral G-force cornering, for braking that happens while the car is still loaded up mid-corner. |
| Inside wheel slip reduction | Helps minimize inside wheel lock-up while trail braking, a common failure point for cars carrying brake pressure deep into a corner. |
| ABS off function | Position 1 on the function switch can be configured to fully disable ABS, for drivers or conditions that call for it. |
| CAN-based map selection | Change ABS maps over CAN communication in addition to the physical switch, useful for teams integrating map changes into a broader vehicle control system. |
| Flexible CAN integration | Configurable CAN wiring supports seamless integration into your specific vehicle's existing electronics. |
Plug-and-play kits built specifically for Porsche Cup cars, tested and developed on tracks including Spa and Nordschleife.
Vehicle-specific wiring harness included. 1 MBaud CAN. Circuit breaker kit included as standard.
Vehicle-specific wiring harness included. 1 MBaud CAN. Circuit breaker kit included as standard.
Custom hard lines between the master cylinder and ABS module are required and must be supplied by you — they're not included in either Porsche kit. Plan for this before install day.
These parts complete the brake line install between the master cylinder and the ABS unit on any Porsche Cup chassis. We don't sell them — source the genuine Porsche parts through Pelican Parts, and have the two hard lines custom-made by a shop that can bend/flare brake line to spec.
| Qty | Porsche P/N | Description | Source |
|---|---|---|---|
| 1 | 997 355 315 11 | Brake line | Search Pelican Parts |
| 1 | 997 355 316 10 | Brake line | Search Pelican Parts |
| 1 | 997 355 326 10 | Brake line | Search Pelican Parts |
| 1 | 997 355 327 11 | Brake line | Search Pelican Parts |
| 1 | Custom | Hard line, front master cylinder to ABS | Custom-fabricated, not sourced from Pelican |
| 1 | Custom | Hard line, rear master cylinder to ABS | Custom-fabricated, not sourced from Pelican |
| 1 | 997 355 033 00 | Mounting bracket | Search Pelican Parts |
| 3 | 999 045 004 40 | Bracket nuts | Search Pelican Parts |
| 4 | 900 385 060 01 | Bracket bolts | Search Pelican Parts |
| 2 | 900 219 007 02 | 10×1.0 port cap | Search Pelican Parts |
| 4 | 900 123 144 30 | 10×13.5 aluminum seal ring | Search Pelican Parts |
DF11s (standard), DF11i (less common), or DF11v (rare) — picking the wrong one holds up your build. Send us your factory wheel speed sensor and we'll test it free of charge to identify the correct type and matching CAN bus speed before your ABS M5 ships. You only cover shipping to and from our facility. If it's not a direct plug-and-play match, we'll help source a solution.
Instantly select the calibration best suited to changing track conditions, without connecting a laptop.
Vehicle parameters are set using RaceABS, free from Bosch Motorsport. The Bosch MSA-Box II USB data cable is required to connect your laptop to the ABS unit (sold separately).
Vehicle weight, wheelbase, and track width.
Individual wheel loads, tire rolling circumference, and sensor increment count.
ABS map assignment per switch position (Kit 1).
| Series / Class / Type | Recommended Kit |
|---|---|
| Hypercar | ABS M5 Kit 1 |
| GT3 or GT4 | ABS M5 Kit 1 |
| Restomod & Custom Performance Builds | ABS M5 Kit 1 |
| Trans Am TA/TA2 | ABS M5 Kit 1 or Clubsport |
| Porsche 991.1 / 991.2 Cup | ABS M5 Porsche 991 Kit |
| Porsche 996/997 Cup | ABS M5 Porsche 996/997 Kit |
| Club & Endurance Racing | ABS M5 Clubsport |
| Hill Climb, Time Attack & Rally | ABS M5 Clubsport |
| Track Day & HPDE | ABS M5 Clubsport |
| Product | SKU | Description | Collection | Availability | Product type | Other details |
|---|
