Professional performance. DIY price. Built by enthusiasts, for enthusiasts.

The MK-II Pro Pedals are the latest addition to the growing DIY-Sim ecosystem of open sim racing hardware.

Designed from the ground up with rigidity, adjustability and serviceability in mind, they deliver the precision and driving feel of premium commercial pedals while remaining affordable and accessible to the maker community.

Inspired by the spirit of "Built, not bought," the MK-II Pro Pedals are more than just another DIY project—they're an engineering project. Every design decision was made with performance, reliability and long-term serviceability in mind, giving you the satisfaction of building a pedal set that's truly your own.

Built around standard 3030 aluminium profiles, the design combines exceptional rigidity with a minimal number of structural 3D-printed parts, resulting in a pedal set that is durable, highly adjustable, easy to maintain and built to last.

The MK-II Pro Pedals also mark an important milestone for DIY-Sim. They form the mechanical foundation for the next generation of professionally manufactured products currently under development. Every design improvement, every piece of community feedback and every real-world build helps refine the same engineering principles that will shape future DIY-Sim hardware.

Whether you're upgrading from entry-level pedals or looking for a rewarding engineering project, the MK-II Pro Pedals deliver premium performance without the premium price tag.

Why 3030 Aluminium Profiles?

The decision to build the MK-II Pro Pedals around 3030 aluminium profiles was a deliberate one.

Rather than relying on large structural 3D-printed parts or expensive custom-machined components, 3030 profiles provide an excellent balance of rigidity, affordability and worldwide availability. They are easy to source, simple to replace and make future upgrades straightforward.

Using aluminium profiles also makes the entire design highly modular. Components can be adjusted, serviced or replaced using standard hardware, ensuring the pedals remain maintainable for years to come.

An additional benefit is aesthetics. The clean industrial appearance of 3030 profiles perfectly complements the 40-series aluminium profile used by most modern sim racing cockpits, allowing the MK-II Pro Pedals to look like a natural extension of your rig rather than a typical DIY project.

The result is a pedal set that is exceptionally rigid, highly serviceable, visually cohesive and designed to evolve alongside your simulator.

Key Features
Precision Inputs — All three pedals use load cells, delivering highly accurate and repeatable inputs for maximum consistency on track.
Progressive Braking — A multi-spring brake mechanism provides a realistic, progressive pedal feel, allowing precise modulation from initial contact to maximum braking force.
Realistic Clutch Feel — A two-stage clutch mechanism recreates the sensation of a defined bite point for a more immersive driving experience.
Smooth Operation — Ball bearings on every pivot ensure exceptionally smooth, low-friction pedal movement.
Hydraulic-Inspired Feel — Compression dampers on all three pedals provide controlled pedal resistance while maintaining a quick pedal return.
Built to Last — Structural 3030 aluminium profiles deliver exceptional rigidity, durability and a premium appearance.
Built for Makers — Standard hardware and readily available materials make the MK-II Pro Pedals easy to build, modify, maintain and repair.
Open & Customisable — Includes Tinkercad source files, allowing you to personalise, modify and further develop the design.
Mounting Options

The MK-II Pro Pedals support several installation methods to suit different simulator rigs:

Bottom mounting directly to a pedal plate.
Top mounting using access holes for the mounting hardware.
Side mounting using optional 3D-printed 3030 brackets. This method is functional but is recommended only when reinforced with aluminium angle brackets underneath for maximum rigidity.
Controller Compatibility

The pedals are compatible with several controller solutions:

Arduino Pro Micro + HX711 load cell amplifier (open DIY controller solution).
Simagic Pedal Controller (connection guide included).
SimNet and Simsonn controllers (compatible using the appropriate pinout configuration).
Early Access Release

This is an exclusive Early Access release of the MK-II Pro Pedals.

The mechanical design is complete, thoroughly tested and ready for builders. The remaining work focuses on expanding the documentation, build guides and supporting resources.

By joining the Early Access release, you'll receive immediate access to the project while helping shape its final documentation through your feedback and experience.

All future documentation updates and project improvements will be available to existing supporters at no additional cost.

Project Contents

Your Early Access download includes:

Complete set of tested STL files used to build the final MK-II Pro Pedals.
Original Tinkercad source files for customisation and further development.
Detailed OBJ assembly model for exploring the complete pedal assembly in any compatible 3D viewer.
Complete Bill of Materials (BOM).
Assembly guide (currently under development).
Simagic Pedal Controller connection guide.
Arduino controller guide (currently under development).
Video assembly guide (currently under development).
All future documentation updates.
Opportunity to provide feedback and help shape future versions of the project.
Changelog
Version 1.0
Exclusive Early Access release.
Initial release of the MK-II Pro Pedals.
Mechanical platform established for the next generation of DIY-Sim hardware.
Thank You

Thank you for supporting DIY-Sim and helping make projects like the MK-II Pro Pedals possible.

Your support enables the continued development of open sim racing hardware, and your feedback plays an important role in refining both current and future projects.

I hope you enjoy building the MK-II Pro Pedals as much as I enjoyed designing them. I can't wait to see your finished builds, customisations and ideas become part of the growing DIY-Sim community.

Because the best sim racing hardware isn't just bought... it's built.