The Probearing SilentSpin bushings offer superior performance compared to polyurethane and OE elastomer bushings. They combine the best features of each: a free-spinning inner sleeve, typical of poly bushings, with the maintenance-free and greaseless advantages of OE elastomer bushings. The SilentSpin bushings are engineered with a composite liner centrally bonded within polyurethane and all securely encased within a steel housing. The inner sleeve is fitted with serrated washers at both ends, creating an ideal interface for bushing rotation, and providing substantial surface area for chassis attachment.
· Self centering
· Maintenance free
· Greaseless
· Pre-installed inner sleeve & serrated washers

Specifications
| Includes | (1) SilentSpin Bushing |
|---|
Part numbers
| P2AU39A | 2.141" W x 1.634" OD x 14mm ID |
|---|---|
| P2AU39B | 2.394" W x 1.634" OD x 16mm ID |
| P2AU39C | 2.5" W x 1.634" OD x 14mm ID |
| P2AU39D | 2.394" W x 1.634" OD x 14mm ID |
| P2AU39E | 2.626" W x 1.634" OD x 16mm ID |
| P2AU39F | 1.929" W x 1.634" OD x 14mm ID |
| P2B339A | 2.717" W x 2.135" OD x 14mm ID |
Why Probearing
- Probearing makes ball joints, bushings, rod ends, spherical bearings and related accessories designed specifically for the off-road market.
- The company is based in Lakeside, California: 10050 Marathon Pkwy, Suite 113, Lakeside CA 92040.
- Products carry a 1-year limited manufacturer warranty against defects in material and workmanship.
- Real people answer the phone and email: (619) 828-3570 · sales@probearing.com.
FAQ
Do these need grease?
No. SilentSpin is greaseless and maintenance-free. A composite liner bonded inside the polyurethane does the job grease would. Don't add grease.
How is this different from poly?
You get a free-spinning inner sleeve like poly, plus the greaseless, maintenance-free setup of an OE elastomer bushing. Everything is in a steel housing, so it's self-centering.
Which size do I need?
Pick by width, OD and ID: 1.634" OD options in 14mm or 16mm ID across several widths, or the 2.135" OD x 14mm ID (P2B339A). Measure your arm or email us your arm make and model.
How do I install them?
Press them into a SilentSpin Outer Bushing Sleeve. The SilentSpin Press Tool Kit lets you press them in or out on a hydraulic press.
What's included?
(1) SilentSpin Bushing with the inner sleeve and serrated washers pre-installed.
What is the warranty?
One year from purchase against defects in material and workmanship, for the original purchaser. Probearing will repair or replace at its discretion. To claim, email or call with proof of purchase. The warranty does not cover installation or labor, misuse, improper installation, or normal wear.
Can I return it?
Yes, within 30 days of receiving it, in the original package and condition, if it is not installed or damaged and was bought directly from Probearing. A 3% processing fee applies. Shipped orders also have a 7% restocking fee, and neither return shipping nor the original shipping cost is refunded. Custom products are non-refundable.
Do you ship internationally?
Yes. Most orders ship via UPS or USPS. International buyers pay import taxes and fees. Orders over $500 need a signature. For bulk or freight orders, contact sales@probearing.com for a quote.
Shipping, returns & warranty
Shipping
Ships within the US and internationally, mostly via UPS or USPS, and shipping is calculated at checkout. Orders over $500 require a signature. If a package arrives damaged or short, email sales@probearing.com with your order number and photos, keep all packaging, and don't install the parts.
Full policy: Shipping policy
Returns
Returns are accepted within 30 days, unused and in the original packaging, with the fees listed above.
Full policy: Refund policy
1-Year Limited Manufacturer Warranty
Covers defects in material and workmanship under normal use, for the original purchaser. Probearing will repair or replace at its discretion. Contact sales@probearing.com or (619) 828-3570 with proof of purchase.
Details: Warranty
Questions? Talk to a real person.
Email sales@probearing.com or call (619) 828-3570
Call (619) 828-3570Email sales@probearing.com