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Looking to custom fabricate your own rear suspension? QA1 offers kits with a variety of spring rates great for any hot rod, pro-street, street rod or drag car.

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Holley EFI 6.86" M8 Pro Dash Introducing the next era of Sniper 2 EFI displays. The new 6.86-inch and 12.3-inch dashes offer unparalleled customization and visibility. Fully compatible with all Sniper 2 EFI installations.
Holley EFI 6.86" M8 Pro Dash Introducing the next era of Sniper 2 EFI displays. The new 6.86-inch and 12.3-inch dashes offer unparalleled customization and visibility. Fully compatible with all Sniper 2 EFI installations.
Part Number: 553-112X
$1,249.95
Holley EFI 6.86" Pro Dash The Holley EFI 6.86" Pro Dash is customizable with a variety of gauge and indicator screens that can be programmed to display any parameter you need from a Holley EFI system. It also includes an integrated10-LED shift light as well as two LEDs on the top left and two on the top right that can be programmed as desired.
Holley EFI 6.86" Pro Dash The Holley EFI 6.86" Pro Dash is customizable with a variety of gauge and indicator screens that can be programmed to display any parameter you need from a Holley EFI system. It also includes an integrated10-LED shift light as well as two LEDs on the top left and two on the top right that can be programmed as desired.
Part Number: 553-112
$1,249.95
Holley EFI 12.3" M8 Pro Dash Introducing the next era of Sniper 2 EFI displays. The new 6.86-inch and 12.3-inch dashes offer unparalleled customization and visibility. Fully compatible with all Sniper 2 EFI installations.
Holley EFI 12.3" M8 Pro Dash Introducing the next era of Sniper 2 EFI displays. The new 6.86-inch and 12.3-inch dashes offer unparalleled customization and visibility. Fully compatible with all Sniper 2 EFI installations.
Part Number: 553-111X
$2,049.95
Holley EFI 12.3" Pro Dash The Holley EFI 12.3" Pro Dash is customizable with a variety of gauge and indicator screens that can be programmed to display any parameter you need from a Holley EFI system.
Holley EFI 12.3" Pro Dash The Holley EFI 12.3" Pro Dash is customizable with a variety of gauge and indicator screens that can be programmed to display any parameter you need from a Holley EFI system.
Part Number: 553-111
$2,049.95
Holley Standalone Digital Dash Kit 7" Digital Dash, Compact & Fully Customizable!
Holley Standalone Digital Dash Kit 7" Digital Dash, Compact & Fully Customizable!
Part Number: 553-109
$1,599.95
Holley LCD Touch Screen Wide range of tuning and data-monitoring options in a compact 3.5" LCD display
Holley LCD Touch Screen Wide range of tuning and data-monitoring options in a compact 3.5" LCD display
Part Number: 553-108
$399.95
Holley EFI 7" Digital Dash Fully customizable 7" Dash, with a huge array of gauge and indicator screens. Compatible with Holley EFI, Sniper EFI, and Terminator X systems.
Holley EFI 7" Digital Dash Fully customizable 7" Dash, with a huge array of gauge and indicator screens. Compatible with Holley EFI, Sniper EFI, and Terminator X systems.
Part Number: 553-106
$899.95
Sniper 2 Transmission Control Kit For Sniper 2 applications (Handheld not included)
Sniper 2 Transmission Control Kit For Sniper 2 applications (Handheld not included)
Part Number: 551-103
$599.95
Standalone Transmission Control Kit - For Carbureted Applications For Carbureted applications - includes 3.5" Handheld.
Standalone Transmission Control Kit - For Carbureted Applications For Carbureted applications - includes 3.5" Handheld.
Part Number: 551-102
$728.95
Sniper 1 Transmission Control Kit Handheld not included
Sniper 1 Transmission Control Kit Handheld not included
Part Number: 551-101
$599.95
Sniper Transmission Controller - Service Unit Service Part Only (Handheld not included)
Sniper Transmission Controller - Service Unit Service Part Only (Handheld not included)
Part Number: 551-100
$499.95
Holley EFI Terminator X Max - Universal MPFI Kit
Holley EFI Terminator X Max - Universal MPFI Kit
Part Number: 550-959
$2,049.95
Holley EFI Terminator X Max - Universal MPFI Kit Universal MPFI Main Harness - GM DBW Throttle Body Control - EV1 Injectors - 3.5 in. Touchscreen
Holley EFI Terminator X Max - Universal MPFI Kit Universal MPFI Main Harness - GM DBW Throttle Body Control - EV1 Injectors - 3.5 in. Touchscreen
Part Number: 550-950
$1,849.95
Holley EFI Terminator X Max - Ford MPFI Kit Universal MPFI Main Harness - GM 4L60E/80E Transmission Control - Ford Spaced EV1 Injectors - 3.5 in. Touchscreen
Holley EFI Terminator X Max - Ford MPFI Kit Universal MPFI Main Harness - GM 4L60E/80E Transmission Control - Ford Spaced EV1 Injectors - 3.5 in. Touchscreen
Part Number: 550-945
$1,849.95
Holley EFI Terminator X Max - Ford MPFI Kit Universal MPFI Main Harness - 98+ 4R70W Transmission Control - 3.5 in. Touchscreen
Holley EFI Terminator X Max - Ford MPFI Kit Universal MPFI Main Harness - 98+ 4R70W Transmission Control - 3.5 in. Touchscreen
Part Number: 550-944
$1,849.95
Holley EFI Terminator X Max - Ford MPFI Kit Universal MPFI Main Harness - 92-97 4R70W Transmission Control - Ford Spaced EV1 Injectors - 3.5 in. Touchscreen
Holley EFI Terminator X Max - Ford MPFI Kit Universal MPFI Main Harness - 92-97 4R70W Transmission Control - Ford Spaced EV1 Injectors - 3.5 in. Touchscreen
Part Number: 550-943
$1,849.95
Holley EFI Terminator X Max - Universal MPFI Kit Universal MPFI Main Harness - GM 4L60E/80E Transmission Control - EV1 Injectors - 3.5 in. Touchscreen
Holley EFI Terminator X Max - Universal MPFI Kit Universal MPFI Main Harness - GM 4L60E/80E Transmission Control - EV1 Injectors - 3.5 in. Touchscreen
Part Number: 550-942
$1,849.95
Holley EFI Terminator X - Foxbody Mustang 5.0 EFI Kit 1979-1993 Ford Mustang
Holley EFI Terminator X - Foxbody Mustang 5.0 EFI Kit 1979-1993 Ford Mustang
Part Number: 550-937F
$1,499.95
Holley EFI Terminator X - Ford MPFI Kit Universal MPFI Main Harness - Ford Spaced EV1 Injectors - 3.5 in. Touchscreen
Holley EFI Terminator X - Ford MPFI Kit Universal MPFI Main Harness - Ford Spaced EV1 Injectors - 3.5 in. Touchscreen
Part Number: 550-937
$1,449.95
Holley EFI Terminator X Universal MPFI Kit Universal MPFI Main Harness - EV1 Injectors - 3.5 in. Touchscreen
Holley EFI Terminator X Universal MPFI Kit Universal MPFI Main Harness - EV1 Injectors - 3.5 in. Touchscreen
Part Number: 550-936
$1,449.95
Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
Part Number: 550-935T
$1,989.95
550-935 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
550-935 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
Part Number: 550-935
$2,049.95
Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
Part Number: 550-934T
$1,989.95
550-934 Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
550-934 Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
Part Number: 550-934
$2,049.95
550-933T Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
550-933T Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
Part Number: 550-933T
$1,789.95
550-933 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
550-933 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
Part Number: 550-933
$1,849.95
550-932T Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
550-932T Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
Part Number: 550-932T
$1,789.95
550-932 Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
550-932 Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
Part Number: 550-932
$1,849.95
Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
Part Number: 550-931T
$1,789.95
550-931 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
550-931 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
Part Number: 550-931
$1,849.95
Holley EFI Terminator X Max - Gen III 4.8/5.3/6.0 GM Truck Engines 24x Crank - 1x Cam - Multec 2 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
Holley EFI Terminator X Max - Gen III 4.8/5.3/6.0 GM Truck Engines 24x Crank - 1x Cam - Multec 2 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
Part Number: 550-930T
$1,789.95
550-930 Holley EFI Terminator X Max - Gen III 4.8/5.3/6.0 GM Truck Engines 24x Crank - 1x Cam - Multec 2 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
550-930 Holley EFI Terminator X Max - Gen III 4.8/5.3/6.0 GM Truck Engines 24x Crank - 1x Cam - Multec 2 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
Part Number: 550-930
$1,849.95
Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV1 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV1 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning Cable
Part Number: 550-929T
$1,789.95
550-929 Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV1 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
550-929 Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV1 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
Part Number: 550-929
$1,849.95
550-928T Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
550-928T Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
Part Number: 550-928T
$1,989.95
TERMINATOR X MAX 58x Late Truck with 6L80 and DBW Control 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and 6L80/90 Transmission Control - 3.5-inch Touchscreen
TERMINATOR X MAX 58x Late Truck with 6L80 and DBW Control 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and 6L80/90 Transmission Control - 3.5-inch Touchscreen
Part Number: 550-928-6
$2,499.95
550-928 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
550-928 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
Part Number: 550-928
$2,049.95
550-927T Holley EFI Terminator X Max - Gen III 4.8/5.3/6.0 GM Truck Engines 24x Crank - 1x Cam - Multec 2 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
550-927T Holley EFI Terminator X Max - Gen III 4.8/5.3/6.0 GM Truck Engines 24x Crank - 1x Cam - Multec 2 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
Part Number: 550-927T
$1,989.95
550-927 Holley EFI Terminator X Max - Gen III 4.8/5.3/6.0 GM Truck Engines 24x Crank - 1x Cam - Multec 2 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
550-927 Holley EFI Terminator X Max - Gen III 4.8/5.3/6.0 GM Truck Engines 24x Crank - 1x Cam - Multec 2 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
Part Number: 550-927
$2,049.95
550-926T Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV1 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
550-926T Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV1 Injectors - Drive-By-Wire Throttle Body and Transmission Control - USB/CAN Tuning Cable
Part Number: 550-926T
$1,989.95
550-926 Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV1 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
550-926 Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV1 Injectors - Drive-By-Wire Throttle Body and Transmission Control - 3.5 in. Touchscreen
Part Number: 550-926
$2,049.95
550-920T Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Transmission Control - USB/CAN Tuning Cable
550-920T Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Transmission Control - USB/CAN Tuning Cable
Part Number: 550-920T
$1,789.95
550-920 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Transmission Control - 3.5 in. Touchscreen
550-920 Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 58x Crank - 4x Cam - EV1 Injectors - Transmission Control - 3.5 in. Touchscreen
Part Number: 550-920
$1,849.95
Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Transmission Control - USB/CAN Tuning Cable
Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Transmission Control - USB/CAN Tuning Cable
Part Number: 550-919T
$1,789.95
Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Transmission Control - 3.5 in. Touchscreen
Holley EFI Terminator X Max - LS1/LS6 24x Crank - 1x Cam - EV6 Injectors - Transmission Control - 3.5 in. Touchscreen
Part Number: 550-919
$1,849.95
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