Size Chart
×
Keep a 25 mm sway bar properly supported with a universal mount bushing kit designed for front or rear installation. The flanged D bushing profile and knurled inner bore help retain grease at the bar while the synthetic elastomer construction supports consistent suspension movement.
| Vehicle Application | Position | Compatibility Requirement |
|---|---|---|
| Any vehicle using a 25 mm sway bar | Front or rear | Use with a compatible W21301 or KBR10 universal mounting bracket |
| Detail | Value |
|---|---|
| Brand | Whiteline |
| Manufacturer part number | W21999-25 |
| Product type | Universal sway bar mount bushing kit |
| Bushing design | Flanged D bushing |
| Bar diameter | 25 mm |
| Bushing quantity | 2 |
| Outside diameter | 35.6 mm |
| Inside diameter | 25 mm |
| Length | 40.7 mm |
| Flange thickness | 4 mm |
| Flange outside diameter | 38.6 mm |
| Material | Synthetic elastomer |
| Color | Black |
| Bracket compatibility | W21301 or KBR10 universal mounting bracket |
| Installation time | 1 hour |
| Warranty | Limited lifetime |
Whiteline develops suspension bushings and chassis components for controlled movement, reliable bar support, and improved handling consistency. Its synthetic elastomer bushings use application specific designs to maintain the intended relationship between the sway bar and mounting structure.
It is a universal kit containing two flanged mount bushings for a 25 mm sway bar.
What sway bar diameter does this kit fit?This kit fits a sway bar with a verified 25 mm diameter. Measure the bar before ordering because nearby sizes are not interchangeable.
Can these bushings be installed on the front or rear?They can be used at the front or rear when the vehicle uses a 25 mm bar and the mounting bracket matches the bushing profile.
Which mounting bracket works with the bushings?Use a compatible W21301 or KBR10 universal mounting bracket for the intended installation.
How many bushings are in the package?The package contains two mount bushings for one sway bar mounting location pair.
What are the bushing dimensions?The bushings measure 35.6 mm outside diameter, 25 mm inside diameter, 40.7 mm length, 4 mm flange thickness, and 38.6 mm flange outside diameter.
What does the knurled inner bore do?The knurled inner bore is designed to help retain grease around the sway bar during service.
What material are the bushings made from?They use a synthetic elastomer formulation and have a black finish.
How long does installation take?Whiteline lists an installation time of about one hour. The actual time depends on vehicle access and the condition of the existing mounting hardware.
What warranty is included?Whiteline backs the bushings with a limited lifetime warranty. Review the current warranty terms before installation.
Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...
View Suspension Products
Sway bar bushings and stabilizer bar bushing kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop polyurethane sway bar bushings, greaseable poly bushings, OE-style rubber replacement bushings, and oversized bushings sized for aftermarket sway bars from SuperPro, Energy Suspension, Prothane, Whiteline, and other suspension brands. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 403 sway bar bushing SKUs across front, rear, inner diameter, and material categories. What This Category Covers Sway bar bushings mount the sway bar to the chassis or subframe, letting the bar rotate freely under cornering load while holding it firmly in place laterally. Every bit of bar stiffness has to pass through those two mounting points, so a worn or wrong-diameter bushing wastes a meaningful share of the bar rated stiffness regardless of how good the ba...
View Sway Bar Bushings Products
Sway bars, bushings, brackets, and end links are stocked at Black Ops Auto Works for improved handling, reduced body roll, and sharper steering response. Shop front and rear sway bars, anti-roll kits, adjustable and billet end links, sway bar bushings, and service kits for Jeep, Dodge, Ram, Ford, Chevrolet, GMC, BMW, Porsche, Subaru, and Toyota platforms. Every product is filterable by year, make, model, trim, and drivetrain so the correct sway bar component ships the first time. Black Ops Auto Works carries 1,966 sway bar and bushing SKUs across street, off-road, and track categories. What This Collection Covers A sway bar, also called an anti-roll bar, connects the left and right sides of the suspension to reduce body roll during cornering. Bushings support the bar in its mounts, and end links connect the bar to the suspension for precise, controlled movement. Product Categories Front sway bars, rear sway bars, anti-roll kits, adjustable sway bars, sway bar bushings and mount ...
View Sway Bars & Bushings Products
Whiteline performance suspension parts are stocked at Black Ops Auto Works for drivers who want sharper handling, reduced suspension deflection, and more precise steering response. Shop sway bars, sway bar links, control arms, bushings, and lowering springs engineered by Whiteline. Black Ops Auto Works carries 1,424 Whiteline SKUs covering a broad range of platforms, from Japanese sport compacts to European sedans, trucks, and EVs. Every part is filterable by year, make, and model. What This Collection Covers This collection includes every Whiteline part in our catalog, spanning sway bars, sway bar links and bushings, control arms and control arm bushings, differential and transmission mount bushings, steering rack bushings, camber and caster correction arms, and lowering springs. Handling Upgrades vs Replacement Bushings Some Whiteline parts are performance handling upgrades, such as adjustable sway bars and lowering springs, while others are direct-fit polyurethane replacement...
View Whiteline Products