TRZ Motorsports Billet Faceplate 4130 9" Housing Blank - Round Tube Back Brace - 650-BTB
4130 Billet 9-Inch Housing Blank with Round Tube Back Brace
The TRZ Motorsports Billet Faceplate 4130 9? Housing Blank with Round Tube Back Brace (Part #650-BTB) is engineered for racers who demand maximum strength and precision from their rear-end assembly. This version incorporates a 1-5/8? 4130 tubular back brace along with housing patches and gussets for exceptional rigidity under high horsepower loads.
The billet faceplate is pocketed for weight savings while maintaining a minimum 7/16? thickness. Blind 3rd member hardware holes, plus integrated vent and drain ports, create a clean and service-friendly design. TRZ's billet axle tube caps locate the 3.5? axle tubes internally for accurate placement, and the 3-piece chromoly shell features a centered fill cap opening for balanced assembly.
Each housing includes an anodized high-grip fill cap with pre-welded bung, internal housing gussets, a complete set of ARP 3rd member studs, nuts, and washers, plus drain and vent fittings. This is a premium, competition-grade foundation for custom 9-inch rear-end builds.
Important: Designed for 3.5? axle tubes and measures 50? tube-end to tube-end with a centered pinion. This housing must use RTV sealant - not a gasket. Units are typically made to order with a 1 - 2 week lead time. Signature is required upon delivery.
Performance Features
- Pocketed billet faceplate for reduced weight
- Minimum 7/16" faceplate thickness
- Blind 3rd member hardware holes
- Integrated vent and drain ports
- Includes 1-5/8" 4130 tubular round back brace
- 3-piece 4130 chromoly housing shell
- Centered fill cap opening with anodized high-grip cap
- Billet axle tube caps for precise tube alignment
- Internal housing gussets included
- Includes ARP studs, nuts, and washers
- Includes drain plug and vent
- Designed for use with RTV sealant only
Quick Specs
- Material: 4130 chromoly
- Axle Tube Diameter: 3.5"
- Total Width: 50" (tube-end to tube-end)
- Pinion: Centered
- Back Brace: 1-5/8" 4130 round tube
- Faceplate Thickness: 7/16" minimum
- Shell: 3-piece chromoly
- Includes: Tube caps, fill cap w/bung, gussets, ARP hardware, vent, drain
- Sealant Requirement: RTV only (no gasket)
- Part Number: 650-BTB
- Lead Time: Typically 1 - 2 weeks
Frequently Asked Questions
What makes the tubular back brace different?
The 1-5/8" round 4130 tubular brace adds significant rigidity and strength compared to the no-brace version, helping prevent housing flex under extreme load.
Can I use a traditional gasket on this housing?
No. TRZ specifies RTV sealant only for proper sealing and fitment.
Why Buy from Beefcake Racing?
Beefcake Racing offers genuine TRZ Motorsports drivetrain components with fast shipping and real technical support. For assistance choosing the right 9-inch housing configuration or back brace option, email sales@beefcakeracing.com or call 1-855-827-7223.
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