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Ultimate IRS 8.8 Rear Differential Swap Kit - Lexus GS300 GS400 $ 989.95 989.95 USD	Ultimate IRS 8.8 Rear Differential Swap Kit - BRZ FRS Toyota 86 $ 989.95 989.95 USD	Honda S2000 Ford 8.8 Rear End Swap Kit - Ultimate IRS S2K $ 1,499.95 1499.95 USD	Ultimate IRS Rear Subframe - MKIV Supra $ 4,699.95 4699.95 USD
Ultimate IRS 8.8 Rear Differential Swap Kit - Lexus SC300 SC400 $ 989.95 989.95 USD	Ultimate IRS Cast Iron 8.8 Differential Case with Billet Main Caps ON BACKORDER 1/15/26 $ 899.95 899.95 USD	Ultimate IRS Rear Subframe - FD3S RX7 with Ford 8.8" $ 4,899.95 4899.95 USD	Ultimate IRS Rear Subframe - FD3S RX7 with Ford 9" $ 9,799.95 9799.95 USD
MKIV Supra - Ultimate IRS Anti-Roll Bar $ 1,195.00 1195.0 USD	FD3S RX7 - Ultimate IRS Anti-Roll Bar $ 1,195.00 1195.0 USD	Ultimate IRS 8.8 Rear Differential Swap Kit - MK5 Supra $ 3,999.95 3999.9500000000003 USD

Thunderbird/Cobra Case Hardware Kit

Explorer Case Hardware Kit

No Hardware

With Hardware Kit

Silver

Blue

Black

Purple

Red

Raw

Satin Black

Custom Color

Polished

No Driveshaft

Aluminum Magnum-F to OEM rear

Aluminum Magnum-F to Ford 8.8" IRS

Carbon Fiber Magnum-F to OEM rear

Carbon Fiber Magnum-F to Ford 8.8" IRS

Aluminum Auto / A340E to Ford 8.8" IRS

Carbon Fiber Auto / A340E to Ford 8.8" IRS

I do not need axles

LEVEL5 Direct Fit (bolt-in)

PRO Level with 5x100 upgraded billet wheel hubs

PRO Level with upgraded billet wheel hubs

PRO Level with 5x114 upgraded billet wheel hubs

Direct Fit Level5 IS300

DSS 1000HP rated axles with 31 spline outer stubs (uses z32 or q45 hubs)

PRO Level FD3S RX7 with billet wheel hubs

I do not need inner axle stubs

Explorer Case

Thunderbird/Cobra/MK8 Case

9" 35 Spline (s-trac LSD)

9" 35 Spline (strange spool)

9" 35 Spline (wavetrac LSD)

I do not need a built 8.8 differential

I do not need a differential

Detroit Truetrac Mechanical LSD

OS Giken Clutch Type LSD

Grannas Racing IRS Machined Spool

I will provide an Explorer core to Grannas Racing

I will provide a Tbird/Cobra core to Grannas Racing

Grannas to source Explorer case (Junkyard Core)

Grannas to source Tbird case (Junkyard Core)

Grannas Cast Iron (Tbird) with billet main caps. ON BACKORDER UNTIL JAN 2026

I plan to run the Explorer Case

I plan to run the Thunderbird/Cobra Case

Spool (race use)

S-Trac LSD

No Driveshaft

Aluminum Magnum-F to OEM rear

Aluminum Magnum-F to Ford 8.8" IRS

Carbon Fiber Magnum-F to OEM rear

Carbon Fiber Magnum-F to Ford 8.8" IRS

Aluminum 2JZ, Magnum-F, 8.8" Rear

Carbon Fiber 2JZ, Magnum-F, 8.8" Rear

Aluminum Honda K-Series, Magnum-F, 8.8" Rear

Carbon Fiber Honda K-Series, Magnum-F, 8.8" Rear

No Driveshaft

Aluminum Magnum-F to OEM rear

Aluminum Magnum-F to Ford 8.8" IRS

Carbon Fiber Magnum-F to OEM rear

Carbon Fiber Magnum-F to Ford 8.8" IRS

Aluminum A340E to Ford 8.8" IRS

Carbon Fiber A340E to Ford 8.8" IRS

No Center Section

Strange Spool (race)

S-Trac LSD (street / strip)

None

Universal "big wide plate" for fabrication

MKIV Supra

Lexus IS300

Lexus SC / GS

Toyota 86 / BRZ / FRS

Honda S2K

With Ford 8.8" front mount only (I already have a Ronin kit, built diff, and axles)

With Complete Ford 8.8" mounting kit (I already have a built 8.8 diff, but need the 8.8 mounting kit and Pro Level axles and billet inner stubs)

Full Setup with Grannas Built Ford 8.8", Mounting kit, and Pro Level axles with billet inner stubs)

No Driveshaft

Carbon Fiber Magnum-F to stock rear

Carbon Fiber Magnum-F to 8.8 rear

Carbon Fiber Stock Manual trans to 8.8 rear

Carbon Fiber Stock Auto trans to 8.8 rear

No anti-roll bar

Include Ultimate IRS Anti-Roll Bar

I already have the FD3S Ultimate IRS Subframe

OEM Subframe (includes weld-on tab kit)

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