CMS Performance Sub Strap + Lap Belt Mount – 2023-2026 Toyota GR Corolla

CMS Performance Sub Strap + Lap Belt Mount — 2023-2026 Toyota GR Corolla

The CMS Performance Sub Strap + Lap Belt Mount for the 2023-2026 Toyota GR Corolla provides mounting points for racing harness lap belts and sub straps using the factory seat mounting bolts. No drilling, no cutting, no permanent modification to the car. CNC machined from 1/4-inch solid carbon steel, fully TIG welded through 360 degrees, and satin black powder coated. Full fore/aft and up/down seat adjustment is maintained throughout. Does not interfere with OEM seat belts or airbag hardware.

DETAILS

• Platform: 2023-2026 Toyota GR Corolla GZEA14
• Provides lap belt and sub strap mounting points for racing harness
• Bolts to factory rear seat mounting points using original seat mounting bolts
• No drilling, cutting, or permanent modification to the vehicle
• CNC machined from 1/4-inch solid carbon steel — fully TIG welded through 360 degrees
• Satin black powder coat — nearly invisible once installed beneath the seat
• Full fore/aft and up/down seat adjustment maintained
• Does not interfere with OEM seat belts or airbag hardware
• Designed, manufactured, and powder coated in USA by CMS Performance
• For off-road use only

Lap Belt and Sub Strap Mounting Without Vehicle Modification

The CMS Performance Sub Strap + Lap Belt Mount is CNC machined from 1/4-inch solid carbon steel and fully TIG welded, bolting to the rear seat mounting points beneath the seat slider tracks using the original seat mounting bolts. It provides strong mounting points for both racing harness lap belts and sub straps without any modification to the vehicle and does not interfere with seat movement fore/aft or up/down.

CNC Carbon Steel, Full Seat Adjustment, and Reversibility

The satin black powder coat is durable and nearly invisible once installed beneath the seat. OEM seat belts and airbag hardware are completely unaffected. The mount is reversible — it can be removed without leaving any trace. Designed, manufactured, and powder-coated entirely in-house in the USA by CMS Performance. For off-road use only.

What’s in the Box

• CMS Performance Sub Strap + Lap Belt Mount

Why Choose Competition Motorsport

Competition Motorsport designs and manufactures roll bars, seat delete panels, and harness hardware for track-prepared and street-driven sports cars from their facility in the USA. Every CMS roll bar is built from Docol R8 Advanced High-Strength Steel — 15% stronger than 4130 CrMo and 30% stronger than mild (DOM) steel used by other manufacturers — and is TIG welded through 360 degrees at every joint. CMS products bolt directly to factory chassis mounting points without cutting, drilling, or welding on the car. Custom powder coating in factory-matched paint colors sets CMS apart from manufacturers who offer only generic black, white, or red. RallySport Direct stocks Competition Motorsport products because the quality of their domestic manufacturing and the thoughtfulness of their fitment engineering produce hardware we are confident recommending for track-day and time attack builds.

The RallySport Take

The CMS Sub Strap + Lap Belt Mount gives GR Corolla owners both lap belt and sub strap attachment in a single, clean, reversible installation. For owners planning to run a four-point harness on track days, this is the correct hardware solution — no modification to the car required, full seat adjustment maintained.

Fitment

Year	Make	Model	Notes
2023-2026	Toyota	GR Corolla	GZEA14 — all trims