TRZ Motorsports Custom Built 4-Link Rearend Housing (Complete)
Racing Use Only, Not Legal for Road Use
Chromoly 4-link rearend housing from TRZ Motorsports, built to order to your 4-link centers and wheel to wheel width. We run TRZ housings on our own builds at Billet Pro Shop, and we are a Canadian TRZ dealer. Pick standard Late Big Ford ends or a Strange floater, add axles if you need them, and we go through the build sheet with you before TRZ starts cutting.
What every TRZ chromoly 4-link housing includes
- Billet faceplate, pocketed for weight savings, with blind third member hardware holes and integrated vent and drain ports
- 7/16" minimum faceplate thickness
- Billet axle tube caps that locate the tubes internally for precise placement
- 3 piece chromoly rear shell with a centered fill cap opening
- Fully braced, with a tubular back brace (4130 sheet metal back brace available as an upgrade)
- Billet aluminum double shear shock mount brackets
- TRZ Late Big Ford (Torino) 3.150" housing ends, or floater spindles, installed
- TRZ 4130 4-link brackets with 5/8" adjustment
- Anodized high grip fill cap
- Internal housing gussets
- ARP third member hardware: 10 studs, nuts and washers
- 1 drain plug and 1 vent
Specifications
| Axle tubes | 3.5" |
| Pinion | Centered |
| Rear cover | Centered |
| Sealing | Made for use with RTV, not a gasket |
| 4-link center to center | 18", 20", 22" or 24" |
| Wheel to wheel | 36", 38", 40", 42", 44", 45", 46", 48", 50", 52" or 54" |
| Wheel backspacing | 2", 3", 4" or 5" |
| Wheel bolt circle | 5 x 4.5" (Ford, flanged axles only), 5 x 4.75" (GM) or 5 x 5" |
| Build time | 3 to 5 weeks, made to order |
Any other 4-link center or wheel to wheel width can be built. Contact us before ordering.
Housing ends and axles
- Standard: TRZ Late Big Ford ends, for flanged axles
- Strange floater: 5 x 4.75" or 5 x 5" bolt circle only
- Mark Williams or TBM floater: available, contact us for a price
Axles are not required with the housing, but you can add them now. All axles are 40 spline.
- Strange Pro-Race flanged axles include bearings and a 5/8" wheel stud kit, 1.125" shoulder, 7/16" washers (A1038)
- Mark Williams flanged axles include bearings and a 5/8" steel wheel stud kit, 1.5" shoulder, 3/4" washers (MW51500-4). 4340 axles up to 51", 300M axles up to 49"
- Flanged axle stud kits suit a 5/8" thick wheel flange and a 1/4" thick brake hat
- Strange floater axles in Hy-Tuff or 300M, up to 51"
- Longer axles are available, contact us
Add-ons
Available at TRZ list price and added to your order when we confirm the build sheet:
- Jacking mount (209-40): $50
- Billet wishbone mount, top (209-70T): $90
- Billet wishbone mount, bottom (209-70B): $90
- Upgrade to 4130 sheet metal back brace: $225
How ordering works
- Choose your housing ends and axles and place the order.
- We contact you to fill in the build sheet: 4-link center to center, wheel to wheel distance, wheel backspacing, wheel bolt circle and any add-ons. For standard flanged axle housings we also need your brake kit brand and part number, or the rotor hat thickness. Not needed on a floater housing.
- TRZ builds your housing. Allow 3 to 5 weeks.
Shipping
- USA: TRZ flat rate housing shipping, $185 USD, shipped direct from TRZ Motorsports.
- Canada: checkout covers the TRZ flat rate freight to our shop in Napierville, Quebec. Pick it up at the shop, or we ship it anywhere in Canada. Shipping from our shop to your door is additional and is quoted when the housing is ready.
- Housings ship in a box by FedEx or UPS and require a signature on delivery.
- Rearend housings do not qualify for free shipping offers.