EMPI Adjustable IRS Spring Plates — 4-1/4" Collar, Pair | VW Thing Type 181 1973–1974 (17-2673-0)

EMPI Adjustable IRS Spring Plates — 4-1/4" Collar (Pair)

The EMPI Adjustable IRS Spring Plates are a high-performance suspension upgrade specifically designed for the 1973-1974 VW Thing (Type 181) and custom off-road applications. Featuring a 4 1/4" collar matched for 24 11/16" torsion bars, these plates let you fine-tune rear ride height by approximately 2" to 3" without the tedious process of re-indexing the torsion bar splines.

Built from heavy-duty steel with a durable painted finish, these plates solve the common issue of "driver's side sag" by allowing independent side-to-side leveling. They are also a staple for Baja Bug and Sand Rail builders who have swapped to the 24 11/16" medium-length bars for improved suspension travel.

Vehicle Fitment

• VW Thing (Type 181): 1973–1974
• Custom IRS builds: Baja Bug / Sand Rail using 24 11/16" bars

Why Choose EMPI?

EMPI builds these plates from heavy-duty steel with a durable painted finish and single-bolt external adjustment, letting Thing and off-road owners level side-to-side sag without re-indexing splines.

Key Features & Benefits

• Independent leveling: Corrects driver's-side sag with side-to-side adjustment
• Easy adjustment: Single-bolt external adjustment, roughly 2"–3" of height
• Durable finish: Gloss black paint for corrosion resistance
• Matched pair: Left and right supplied together

Technical Specifications

• Collar size: 4 1/4" extension
• Torsion bar: 24 11/16 inch
• Adjustment: Single-bolt external adjustment for height leveling
• Finish: Durable gloss black paint
• Sold as: Matched pair (left and right)
• Part number: 17-2673-0

Frequently Asked Questions

• How much can I adjust ride height? Approximately 2" to 3" without re-indexing the torsion bar splines.
• What collar and torsion bar size do these use? A 4 1/4" collar, matched for 24 11/16" torsion bars.
• Are these sold individually or as a pair? Sold as a matched pair (left and right).

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