Sparco 004903 HD Aluminum Side-Mount Brackets, Silver for Racing/Track Seats

Vehicle Fitment

• Universal fit for side-mount racing/performance seats (Sparco, OMP, Cobra, Sabelt, etc.)

Fitment Notes

• Side-mount only--requires floor-mount adapter or floor plate system
• Designed for seats with 6 mm side-mount bolt holes
• Can be mounted with legs facing inboard or outboard for installation flexibility
• Includes 4 M8 x 1.25 bolts for attaching to seat
• Not compatible with seats requiring steel reinforcement or FIA roll-bar mounting

Features

• 6 mm thick anodized aluminum construction--lightweight yet strong
• Multiple side-hole mount positions for adjustable seat placement
• Reverse-leg mounting option supports customized fitment needs
• Silver anodized finish resists corrosion and wear
• Pair weighs just 3.4 lb (1.5 kg)--lighter than steel alternatives
• All-aluminum design eliminates rust and reduces weight
• FIA-compliant materials for motorsport use
• Sold as a pair--complete hardware included

Specifications

• Part Number: 004903
• Material: 6 mm anodized aluminum
• Finish: Silver anodized
• Weight: ~3.4 lb (1.5 kg) per pair
• Mounting Holes: Side-mount pattern; includes (4) M8 x 1.25 bolts
• Reversible Legs: Support both inboard and outboard mounting
• Certifications: FIA-compliant for competition use

Included Components

• 1x Pair of HD aluminum side mount brackets (left & right)
• 4x M8 x 1.25 bolts for seat attachment
• Installation instructions

Product Description

The Sparco 004903 HD side-mount brackets are engineered for performance and racing installations, offering universal compatibility with side-mount seats from major brands like Sparco, OMP, Cobra, and Sabelt. Constructed from robust 6 mm anodized aluminum and weighing just 3.4 lb per pair, they ensure strength without bulk. The anodized silver finish provides a durable, corrosion-resistant appearance suitable for demanding environments.

Featuring multiple side-hole positions and the option to reverse the leg direction, these brackets offer extensive seating position adjustability. Supplied with M8 x 1.25 mounting bolts, they install easily onto side-mount seat rails. Ideal for motorsport, sim rigs, or custom builds, the 004903 brackets deliver lightweight performance with FIA-compliant construction. Whether on the track or daily-driven builds, they enable precise seat placement and secure mounting in nearly any application.