Prothane Universal Sway Bar Bushings – 22mm | A-Bracket Mount | Black | 19-1121-BL

Prothane universal polyurethane sway bar bushings in 22mm inner diameter, designed for A-bracket (saddle/loop bracket) sway bar mounting. Black polyurethane compound. A direct upgrade from the factory rubber sway bar bushings — firmer, more dimensionally stable, and significantly more resistant to oil, ozone, and long-term compression set than rubber. Universal fit — sized by sway bar diameter. Confirm your sway bar outer diameter is 22mm before ordering.

Key Specifications

• Inner Diameter: 22mm — fits sway bars with a 22mm outer diameter. Measure your sway bar before ordering
• Mount Type: A-bracket (saddle/loop bracket) — the bushing sits inside a U-shaped bracket that clamps around it. This is the standard sway bar frame mount style on most vehicles. Not for press-in bore applications
• Material: Black polyurethane — same compound as Prothane’s red bushings, different colour. Firmer than rubber with better resistance to oil, ozone, and UV degradation
• Quantity: Confirm pack quantity in product listing — most sway bar bushing sets include two bushings (one per mount point)

Polyurethane vs. Rubber

Factory sway bar bushings are rubber — soft, quiet, and compliant but prone to compression set (permanent deformation under load), cracking from ozone and UV exposure, and deterioration from oil contamination. Once a rubber sway bar bushing has compressed or cracked, it allows the sway bar to move within the bracket — producing a knocking or clunking noise on body roll and reducing the sway bar’s effectiveness at limiting body roll. Prothane’s polyurethane compound is significantly firmer and more dimensionally stable — it holds its shape under load, resists oil and ozone degradation, and does not compress permanently over time. The trade-off is a slight increase in NVH (harshness and noise transmission) compared to rubber — an accepted and expected characteristic of polyurethane bushings that most performance-oriented drivers consider worthwhile for the improvement in handling consistency and bushing longevity.

Key Features

• Prothane Polyurethane: One of the most established polyurethane bushing brands in North America — consistent compound quality and dimensional accuracy across their universal bushing line
• Firmer Sway Bar Response: Less bushing deflection means the sway bar transfers more of its anti-roll force to the suspension, improving body roll control and handling consistency
• Oil and Ozone Resistant: Polyurethane does not swell or degrade from oil contamination or ozone exposure the way rubber does — significantly longer service life in real-world conditions
• No Compression Set: Polyurethane holds its shape under sustained load — does not permanently deform over time the way rubber bushings do
• Universal Fit: Sized by inner diameter — fits any sway bar application with a 22mm outer diameter and A-bracket mounting

Universal fitment — confirm your sway bar outer diameter is 22mm and that your sway bar uses an A-bracket (saddle/loop) mount before ordering. Grease bushings with the included or a compatible polyurethane-safe grease at installation — do not use petroleum-based grease. A suspension alignment check is recommended after replacing sway bar bushings.

Specifications

• Brand: Prothane
• Part Number: 19-1121-BL
• Material: Black Polyurethane
• Inner Diameter: 22mm
• Mount Type: A-Bracket (Saddle/Loop Bracket)
• Application: Universal — 22mm sway bar, A-bracket mount
• Weight: 0.6 lbs