TRZ Motorsports Billet Adjustable 4-Link Mount Kit (Chassis Mount / Vertical) - 650-300
Billet Adjustable Vertical 4-Link Chassis Mount Kit
The TRZ Motorsports Billet Adjustable 4-Link Mount Kit (Part #650-300) is engineered for chassis builders who demand a fully tunable, ultra-strong vertical 4-link mounting solution. This billet steel system offers extensive adjustability through precision-machined 4140 slider plates and a keyed design that locks components together for superior strength under extreme load.
The kit provides 5/8? rod-end adjustments and multiple configuration options to fine-tune instant center, anti-squat, and bar angles for both small-tire and big-tire applications. Using the slider alone gives 1/4? adjustments, while combining slider and rod-end positions allows for 1/8? fine adjustments.
Both the upper and lower slider brackets can be flipped forward or rearward to dramatically increase configuration possibilities - providing 28 total upper adjustments and 16 lower adjustments. The lower mount is designed to fit a 1.625? (1-5/8?) vertical tube, the standard #1 bar in most chassis builds, and includes an integrated 1-1/4? Pro-Jack mount.
The upper mount is supplied long so it can be trimmed and positioned between 12? and 16? (center of lower mount to top). All necessary NAS hardware is included for maximum reliability.
Performance Features
- Billet steel adjustable 4-link chassis mount system
- 4140 steel slider adjustment plates for durability
- 5/8? rod-end adjustment points (three per side)
- 1/4? adjustments with slider alone; 1/8? adjustments with slider + rod-end combo
- Upper brackets offer 28 total adjustments; lower brackets offer 16
- All slider brackets and chassis mounts are keyed for high-strength interlocking fit
- Adjustment range supports both small-tire and big-tire applications
- Vertical tube mount design
- Lower mount fits 1.625? (1-5/8?) standard #1 bar
- Integrated 1-1/4? Pro-Jack mount
- Upper mount supplied long, fits 12? - 16? span
- Includes full NAS hardware: (8) 3/8 bolts & (4) 1/2 bolts
Quick Specs
- Mount Type: Vertical chassis mount
- Material: Billet steel with 4140 slider plates
- Rod-End Adjustment: 5/8?
- Adjustment Increments: 1/4? via slider; 1/8? via slider + rod-end
- Total Adjustments: 28 upper, 16 lower
- Tube Compatibility: 1.625? (1-5/8?) lower mount
- Pro-Jack Mount: Integrated 1-1/4?
- Upper Mount Range: 12? - 16? center-to-center
- Hardware Included: (8) 3/8 NAS bolts, (4) 1/2 NAS bolts
- Part Number: 650-300
Frequently Asked Questions
Does this kit fit both small-tire and big-tire setups?
Yes. The wide adjustment range allows tuning for small-tire, big-tire, and varying instant-center needs.
Are the slider brackets keyed?
Yes. Both the slider brackets and chassis mounts are keyed for a locked-in, high-strength interface under heavy load.
Why Buy from Beefcake Racing?
Beefcake Racing supplies authentic TRZ Motorsports chassis components with fast shipping and real technical support. For help choosing or configuring 4-link components, email sales@beefcakeracing.com or call 1-855-827-7223.
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