Key Features & Benefits – Sparco Grid-Q QRT FIA 8855-1999 fibreglass racing seat
Sparco Grid-Q QRT FIA 8855-1999 fibreglass racing seat with a lightweight shell and modular Velcro cushions for adjustable support. It is a side-mount seat with M8 fixings and 290 mm spacing, so bracket selection starts with matching that bolt pattern.
QRT manufacturing delivers a 30% weight reduction compared with traditional fibreglass seat production methods while keeping the shell rigid. The more open shoulder area helps with steering movement, and the pads can be repositioned to suit driver preference.
When is this useful?
When a car is shared between drivers or you want precise seating position, the removable cushions make adjustments straightforward while the deep side bolsters help keep the body stable under cornering and braking.
Technical specs
- Homologation: FIA 8855-1999
- Shell material: Fibreglass
- Manufacturing: QRT, 30% weight reduction vs traditional fibreglass seat methods
- Weight: 6.5 kg
- Mounting: Side mount, M8, 290 mm spacing
- Harness slots: 5; for 4, 5 or 6-point harnesses
- Compatibility: Usable with FHR devices
- Cushions: Modular, Velcro-secured, movable and removable
Selection & installation tips
- Bracket bolt pattern: Confirm your side mounts match 290 mm spacing and M8 hardware.
- Harness routing: Check 4/5/6-point belts run cleanly through the slots and buckles have clearance in the cockpit.
- FHR setup: With an FHR device, verify helmet, restraint and shoulder area clearance in your car.
- Pad positioning: Reposition the Velcro pads during a test fit to balance hip and thigh support.
- Cockpit space: Measure cockpit width and nearby structures so the bolsters do not interfere with door bars, tunnel or steering hardware.
Before installation, verify available space, bracket bolt pattern, belt type and your FHR setup clearance, then compare them to the technical specs listed above.
