{"product_id":"empi-adjustable-irs-spring-plates-1-1-4-collar-off-road-17-2672-0","title":"EMPI Adjustable IRS Spring Plates — 1-1\/4\" Collar, Off-Road, 21-3\/4\" Torsion Bar (Pair) | 17-2672-0","description":"\u003cp\u003eEMPI adjustable IRS spring plates with 1-1\/4\" collar — engineered for off-road and high-performance VW IRS rear suspension applications using the standard 21-3\/4\" torsion bar. Allows full, infinite rear ride-height adjustment without disassembling the torsion housing. Sold as a pair. EMPI part #17-2672-0.\u003c\/p\u003e\n\n\u003ch3\u003eWhat adjustable spring plates do\u003c\/h3\u003e\n\u003cp\u003eThe spring plates are the lever arms that connect the IRS torsion bars to the rear trailing arms. On a factory VW, ride height is fixed by how the splined torsion bar engages the spring plate — change ride height and you have to pull the entire torsion bar apart, re-clock the splines, and reassemble. That's a major job, and you can't fine-tune; you're stuck with whatever splined position is closest to your target height.\u003c\/p\u003e\n\n\u003cp\u003eAdjustable spring plates replace the fixed factory plates with a precision-machined plate that has a built-in adjuster. Loosen the adjuster, change the angle, retighten — your rear ride height moves in continuous, fine increments. For off-road builders dialing in the right suspension stance, performance builders setting up corner weights, or anyone wanting to swap between show-low and drive-friendly ride heights, adjustable plates are the right tool.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollar size:\u003c\/strong\u003e 1-1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorsion bar length:\u003c\/strong\u003e 21-3\/4 inch (standard IRS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Off-road \/ high-performance IRS suspension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as:\u003c\/strong\u003e Pair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustment:\u003c\/strong\u003e Continuous, infinite within adjustment range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 17-2672-0\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVW IRS rear suspension applications using the 21-3\/4\" torsion bar with 1-1\/4\" collar\u003c\/li\u003e\n\u003cli\u003eOff-road builds: Baja Bug, sand rail, dune buggy with IRS rear\u003c\/li\u003e\n\u003cli\u003ePerformance VW builds requiring infinite ride-height adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCritical: match collar size to your torsion housing.\u003c\/strong\u003e VW used multiple collar sizes across years and applications. This 1-1\/4\" version is for specific IRS applications — verify your collar diameter before ordering. For 4-1\/4\" collar applications see #17-2673-0; for 6-1\/8\" collar (Type 1 IRS 1968-71) see #17-2674-0; for 6-1\/8\" collar (late Beetle 1972-79) see #18-1075-0.\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I know what collar size I have?\u003c\/strong\u003e\u003cbr\u003e\nMeasure the diameter of the collar at the outboard end of the torsion housing — where the spring plate bolts up. Common sizes are 1-1\/4\", 4-1\/4\", and 6-1\/8\". Match to your specific application before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill I need an alignment after installing?\u003c\/strong\u003e\u003cbr\u003e\nYes, absolutely. Changing rear ride height changes rear camber and toe. After any adjustment, get the car aligned — without it, you'll see rapid tire wear and unpredictable handling.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I install these myself?\u003c\/strong\u003e\u003cbr\u003e\nPossible but moderately involved. The torsion housing has to be opened, the existing spring plates removed, the new plates installed, the torsion bars re-clocked to the new plate engagement, and everything reassembled. Plan on 2-4 hours for someone familiar with VW rear suspension. If you've never been in the rear suspension before, a shop install is reasonable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow much adjustment range do they provide?\u003c\/strong\u003e\u003cbr\u003e\nContinuous adjustment within the mechanical range — typically enough to cover 2-4\" of ride height variation. Combined with appropriate torsion bar clocking, total adjustment range is even larger.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these street legal?\u003c\/strong\u003e\u003cbr\u003e\nYes, fully street legal in standard installation. Some extreme adjustment positions may put alignment outside factory spec — keep alignment within reasonable bounds for street use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between off-road and street versions?\u003c\/strong\u003e\u003cbr\u003e\nDifferent versions have different geometry and adjustment ranges tuned for the intended application. The 17-2672-0 off-road version is designed for the suspension travel demands of Baja, sand rail, and similar builds.\u003c\/p\u003e","brand":"EMPI","offers":[{"title":"Default Title","offer_id":44899665051763,"sku":"17-2672-0","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/17-2672-0-scaled-500x333.jpg?v=1777272968","url":"https:\/\/shop.washburnsmetal.com\/products\/empi-adjustable-irs-spring-plates-1-1-4-collar-off-road-17-2672-0","provider":"Washburn's Metal","version":"1.0","type":"link"}