Sparco Seat Mounting Base: 600 Series
$199.00
Sparco 600 Series Seat Mounting Base
Fitment for a Wide Range of Cars and Trucks
Sparco 600 Series seat bases utilize the factory seat mounts on your car's or truck's floor to give you a strong, flat mounting surface for your Sparco racing seat. Sparco 600 Series seat bases are vehicle specific for an easy, bolt-in installation. The 600 Series Sparco racing seat base is constructed with 3/16" steel providing a strong, flex-free mount.
Sparco 600 Series racing seat mounting bases are powder coated in a black wrinkle finish for a clean look. In addition to the mounting holes provided for standard bolt-on installation, the Sparco base has a wide metal platform for custom installation of side mounts directly to the base (drilling required). Direct installation is handy in race vehicles where the lowest seat position is desired.
Note: We carry Sparco 600 Series seat mounting bases for dozens of popular fitments in stock. For less-common fitments, it may take up to 10 business days for your mounting base to ship.
Photos are of various Sparco 600 Series Mounting Bases. Your seat mounting base may differ.
Sparco Seat Mounting 600 Series Base Details:
Manufacturer: Sparco
Manufacturer part no.: 600SB
Construction: 3/16" steel
Finish: wrinkle-finish black powder coating
Outer mounting holes for wide side-mount racing seats
Mounting surface allows direct installation of side mounts (some drilling may be required)
Proper Installation of Your Sparco Racing Seat Requires:
(1) Sparco 600 Series Seat Mounting Base
(1) Set of two side mount brackets (steel or aluminum)
(1) Side mounting hardware kit (50002)
Optional (1) Track Set Seat Slider (00493)1
1Â The Track Set Seat Slider allows for forward and aft seat adjustment. It is not SFI or FIA certified. Check with your sanctioning body before installing.
Sparco 600 Series Seat Mounting Base Part Numbers
Copy the SKU from the chart below and paste it into the "Input Part Number" field above when adding to cart.
OMP 36-Hole Seat Side Mount Brackets
from $179.00
OMP 36-Hole Racing Seat Brackets
New OMP racing seat brackets feature a 36-hole design to accommodate an incredibly wide range of seat mounting configurations. Made from steel or OMP's high-strength 6mm aluminum construction, they comply with FIA Appendix J article 253, approved for competition use. They are designed to work seamlessly with OMP Racing Seats, and will fit many other seats with 11.4 in. (289 mm) side-mounting hole spacing (including many Sparco seats).
The multi-hole design allows for up to 36 different seat mounting positions. Aluminum mounts are black anodized for excellent durability.
Sparco Side Mount Brackets: HD Aluminum (004903)
$169.00
Sparco HD Aluminum Side Mount Seat Brackets
Far and away our most popular side mount seat bracket, the Sparco HD Aluminum seat mounts have multiple side holes making it easy to customize your seating position.
The Sparco HD Aluminum side mounts have the added benefit of being able to mount with the legs facing either in or out, giving you more vehicle mounting options. These heavy duty side mounts are larger than the standard Sparco aluminum side mounts. All aluminum construction makes them lightweight, with an anodized silver finish for durability.
Sparco HD Aluminum Side Mount Details
Manufacturer: Sparco
Manufacturer part no.: 004903
Material: aluminum
Finish: anodized silver
Weight: 3.4 lbs (1.5 kg) per set
Multiple mounting positions
Reverse mount option
CMS Performance Sub Strap + Lap Belt Mount for BMW E46
from $159.00
CMS Performance Sub Strap + Lap Belt Mount for BMW E46
This mount fits BMW E46 cars (1999-2006), driver or passenger side
The Best Way to Mount Harness Lap and Sub Belts in Your BMWÂ
The CMS Performance Sub Strap + Lap Belt Mount is designed to be installed and used with your factory BMW seats, giving you strong, secure mounting points for your racing harness lap- and sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original BMW mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap + Lap Belt Mount provides an extremely strong structure to which you can clip or bolt your harness lap belts and wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap + Lap Belt Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap + Lap Belt Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap + Lap Belt Mount for BMW Details:
Manufacturer: CMS Performance
Manufacturer part no.: CMS-SL-E46
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
CMS Performance Sub Strap + Lap Belt Mount | GR Supra/GR86/BRZ
from $159.00
CMS Performance Sub Strap + Lap Belt Mount for GR Supra
Fits the Following Vehicles:
Toyota GR Supra, A90/91 (2020+)
Toyota GR86 (2022+)
Subaru BRZ, ZN8 (2022+)
The Best Way to Mount Harness Lap and Sub Belts in Your Toyota/Subaru
The CMS Performance Sub Strap + Lap Belt Mount is designed to be installed and used with your factory seats, giving you strong, secure mounting points for your racing harness lap- and sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap + Lap Belt Mount provides an extremely strong structure to which you can clip or bolt your harness lap belts and wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap + Lap Belt Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap + Lap Belt Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap + Lap Belt Mount Details:
Manufacturer: CMS Performance
Manufacturer part no.: CMS-SL-001
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
CMS Performance Sub Strap + Lap Belt Mount for Porsche
from $159.00
CMS Performance Sub Strap + Lap Belt Mount for Porsche
This Mount Fits All Variants of the Following Cars:
Porsche 911 (1997+)
Porsche Boxster (1997+)
Porsche Cayman (2006+)
The Best Way to Mount Harness Lap and Sub Belts in Your Porsche
The CMS Performance Sub Strap + Lap Belt Mount is designed to be installed and used with your factory Porsche seats, giving you strong, secure mounting points for racing harness lap- and sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original Porsche mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap + Lap Belt Mount provides an extremely strong structure to which you can clip or bolt your harness lap belts and wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap + Lap Belt Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap + Lap Belt Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap + Lap Belt Mount Details:
Manufacturer: CMS Performance
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
CMS Performance Sub Strap Mount for C6 Corvette
from $159.00
CMS Performance Sub Strap Mount for Corvette C6
This Mount Fits All Variants of the Following Cars:
Chevrolet Corvette C6 (All)
The Best Way to Mount Harness Lap and Sub Belts in Your C6 Corvette
The CMS Performance Sub Strap Mount is designed to be installed and used with your factory seats, giving you strong, secure mounting points for racing harness sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap Mount provides an extremely strong structure to which you can wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap Mount Details
Manufacturer: CMS Performance
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
CMS Performance Sub Strap Mount for C7 Corvette
from $159.00
CMS Performance Sub Strap Mount for Corvette C7
This Mount Fits All Variants of the Following Cars:
Chevrolet Corvette C7 (All)
The Best Way to Mount Harness Lap and Sub Belts in Your C7 Corvette
The CMS Performance Sub Strap Mount is designed to be installed and used with your factory seats, giving you strong, secure mounting points for racing harness sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap Mount provides an extremely strong structure to which you can wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap Mount Details
Manufacturer: CMS Performance
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
CMS Performance Sub Strap Mount for C8 Corvette
from $159.00
CMS Performance Sub Strap Mount for Corvette C8
This Mount Fits All Variants of the Following Cars:
Chevrolet Corvette C8Â
Chevrolet Corvette C8 Z51
Chevrolet Corvette C8 Z06
Chevrolet Corvette C8 ZR-1
The Best Way to Mount Harness Lap and Sub Belts in Your C8 Corvette
The CMS Performance Sub Strap Mount is designed to be installed and used with your factory seats, giving you strong, secure mounting points for racing harness sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap Mount provides an extremely strong structure to which you can wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap Mount Details
Manufacturer: CMS Performance
Manufacturer Part Number: Harninstall-C8
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
CMS Performance Sub Strap + Lap Belt Mount for Mustang GT350/GT350R/S550
from $159.00
CMS Performance Sub Strap + Lap Belt Mount for GT350/GT350R/S550
This Mount Fits All Variants of the Following Cars:
Ford Performance Shelby GT350Â (2015-2020)
Ford Performance Shelby GT350R (2016-2020)
Ford Performance Shelby GT500Â (2021+)
Ford S550 Mustang GT (2015-2023)
The Best Way to Mount Harness Lap and Sub Belts in Your Shelby Mustang
The CMS Performance Sub Strap + Lap Belt Mount is designed to be installed and used with your factory Ford Performance seats, giving you strong, secure mounting points for racing harness lap- and sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original Ford mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap + Lap Belt Mount provides an extremely strong structure to which you can clip or bolt your harness lap belts and wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap + Lap Belt Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap + Lap Belt Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap + Lap Belt Mount Details:
Manufacturer: CMS Performance
Manufacturer part no.:Â CMS-SL-003
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
CMS Performance Sub Strap + Lap Belt Mount | Toyota GR Corolla
from $159.00
CMS Performance Sub Strap + Lap Belt Mount for Toyota GR Corolla
Fits the Following Vehicles:
Toyota GR Corolla (2023+)
The Best Way to Mount Harness Lap and Sub Belts in Your GR86/BRZ
The CMS Performance Sub Strap + Lap Belt Mount is designed to be installed and used with your factory Toyota GR seats, giving you strong, secure mounting points for racing harness lap- and sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original seat mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap + Lap Belt Mount provides an extremely strong structure to which you can clip or bolt your harness lap belts and wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap + Lap Belt Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap + Lap Belt Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap + Lap Belt Mount Details:
Manufacturer: CMS Performance
Manufacturer part no.:Â CMS-SL-005
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
CMS Performance Sub Strap + Lap Belt Mount for BMW
from $159.00
CMS Performance Sub Strap + Lap Belt Mount for BMW
This mount fits BMW cars (2008+), driver or passenger side (Does not fit 2007 or earlier BMW's)
The Best Way to Mount Harness Lap and Sub Belts in Your BMWÂ
The CMS Performance Sub Strap + Lap Belt Mount is designed to be installed and used with your factory BMW seats, giving you strong, secure mounting points for your racing harness lap- and sub-belts without any drilling or cutting. The CMS Performance mount bolts to the rear mounting points of the driver and/or passenger seat, beneath the seat slider tracks, using your original BMW mounting bolts.
CNC machined from 1/4-inch solid carbon steel and fully 360º TIG welded, the CMS Performance Sub Strap + Lap Belt Mount provides an extremely strong structure to which you can clip or bolt your harness lap belts and wrap your sub strap(s). Powder coated a rich, durable satin black, the CMS Performance Sub Strap + Lap Belt Mount is nearly invisible once installed. It does not interfere with seat movement fore/aft or up/down in any way, installs in minutes, and can be removed just as easily without leaving a trace.
The CMS Performance Sub Strap + Lap Belt Mount is designed, manufactured, and powder-coated entirely in-house in the USA.
CMS Performance Sub Strap + Lap Belt Mount for BMW Details:
Manufacturer: CMS Performance
Manufacturer part no.: CMS-SL-001
Construction: TIG-welded solid carbon steel
Finish: satin black powder-coat
Fitment: fits driver or passenger seat
Allows full fore/aft and up/down seat adjustment
Does not interfere with OEM seat belts or airbag hardware
Sparco QRT-R Side Mount Brackets (600QRT)
from $150.00
Sparco QRT-R Side Mount Seat Brackets
Sparco QRT-R side mounts are specifically designed for the QRT-R and other QRT performance seats. These QRT side mounts are designed for the unique bottom shape of QRT seats. Multiple side holes allow your QRT seat to be mounted low in the vehicle and with the proper amount of recline or rake. Available in black.
Sparco QRT-R Side Mount Details
Manufacturer: Sparco
Manufacturer part no.: 600QRT, 600QRTAL
Material: steel or aluminum
Weight: 6.5 lbs per set (steel), 3.2 lbs per set (aluminum)
Designed for unique QRT bottom shell shape
Allows for low mounting in vehicle and proper recline or rake
Sparco Side Mount Brackets: Aluminum (600W)
$150.00
Sparco Aluminum Side Mount Seat Brackets
Sparco Aluminum side mounts lightweight and strong, used to mount Sparco competition seats in your vehicle. These Sparco side mounts have multiple side holes, making it easy to find a safe and comfortable mounting position.
Sparco 600W Aluminum Side Mount Seat Bracket Details
Manufacturer: Sparco
Manufacturer part no.: 600W
Material: aluminum
Finish: black powder coating
Weight: 2.5 lbs. (set of two mounts)
Racetech RTB1005M Aluminum Side Mount Brackets
$149.99
Racetech RT1005M Aluminum Side Mounts
Light Weight and Strong Racing Seat Side Brackets
Racetech milled aluminum alloy bracket set for side-mounting seats to your car floor or chassis. CNC machined from from strong, lightweight 5mm thick 5083 aluminum alloy.
Sold as a pair.
Racetech RT1005M Brackets Fit the Following Seats
RT1000
RT4000WÂ (discontinued)
RT4000WXÂ (discontinued)
RT Saker (with modification)
RT Road
RT RoadW (discontinued)
RT4000WLB
RT4000WXLB
RT1000LBHG
Racetech RT1005M Specs and Details
Weight: 2.52 lbs (1.14 kg) per pair
Materials:Â 5mm 5083 aluminum alloy
Seat hole spacing: nominal 260mm; min 252mm; max 264mm
Sparco Side Mount Brackets: 90° Aluminum (600W90)
$140.00
Sparco 90° Aluminum Seat Side Mount Brackets
Sparco 90o Aluminum Side Mounts are lightweight and strong for mounting competition seats in your vehicle. These side mounts have multiple mounting holes, making it easy to customize your seat mount for safety and comfort. Their all-aluminum construction keeps them feather-light, and they're powder coated black for durability.
Sparco 90o Aluminum Side Mounts are ideal for vehicles with limited room for seat mounts. Compared to typical side mounts, their smaller footprint gives you mounting options.
Sparco Aluminum 90o Side Mount Details
Manufacturer: Sparco
Manufacturer part no.: 600W90
Material: aluminum
Finish: powder coated for superior protection
Weight: 2.5 lbs (1.1kg) per set