
Bolt-In Roll Bars
Chromoly 4130, powder-coated, chassis-specific. True bolt-in fit, fully reversible — built for lapping days.

Bellevue's Porsche specialists since 2005 — and the rare shop that manufactures its own chassis hardware in-house.
We build our own hardware in-house. We design, fabricate, and powder-coat it ourselves — chromoly bolt-in roll bars, seat and sub-belt mounts, transmission mounts, and the diagnostic tooling we use every day. Engineered for a specific chassis, finished to a standard we'd put in our own cars, and 100% bolt-in: no cutting, no welding, fully reversible.
In-house fabrication · Bellevue WAWe manufacture our own parts and distribute the best in the business. This is the side we build in-house — refined over two decades of Porsches.

Chromoly 4130, powder-coated, chassis-specific. True bolt-in fit, fully reversible — built for lapping days.

Seat adapters, side mounts and sub-belt mounts engineered for correct harness angles.

Urethane Porsche transmission mounts for tighter shifts and a more connected drivetrain.

The Porsche-specific bench tool we built to catch cooling-system faults before they cost an engine.
Porsche specialists, first and foremost — scheduled maintenance, engine and transmission work, suspension setup, custom exhaust, and the fabrication most shops won't touch. The same hands that build our parts work on your car.
Engine-out build · in-houseFactory-level service for Porsche & European performance cars, by techs who race them.
ECU calibration, intake & exhaust, bolt-on power — dialed for street or track.
Damper service, corner-balancing and alignment for the platforms we distribute and run.
Roll cages, custom exhaust, mounts, engine swaps — bespoke metalwork, in-house.
Corner-balancing, safety equipment, alignment and data — your car sorted for lapping days.
We'll pick up and deliver your car to the track so you show up ready to drive.

Our parts and our builds get sorted on lapping days, not in a catalog — because the only proof that counts happens between corners. From Thunderhill to The Ridge, if it carries the Cantrell name, it's been tested where it has to hold together.
Start Your Build →Describe the Porsche build — livery, wheels, aero, the track you picture it on — and our AI renders a concept so you can see the direction before the first wrench turns.







"We've spent two decades earning the right to put our name on a part. Every roll bar, every build, every lap — it carries the Cantrell name because we'd trust it under our own car."
Cantrell Motorsports · Porsche specialists since 2005 · Bellevue, Washington
Service, a custom build, or parts that actually fit your Porsche — start the conversation.