RockShox 32mmx5mm Foam Ring - Sid
RockShox

RockShox 32mmx5mm Foam Ring - Sid

$25.00
In Stock

OEM RockShox foam ring kit (32mm x 5mm, 20 pcs) for SID, Reba and Bluto forks. High‑density open‑cell foam holds fork lube to reduce stiction and extend seal life.

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Product Details

Overview & Technology

RockShox 32mm x 5mm foam rings are OEM service parts engineered to sit behind the dust wiper and soak fork lubrication for SID, Reba and Bluto series forks. This kit includes 20 foam rings (Manufacturer Part # 11.4015.496.010, SRAM Model ID FS-SPP-A0) sized for the 32mm stanchion assemblies used across SID A1–A3, REBA A2–A3, BLUTO A1 and SID SL C1 (2021). The rings are made from a high‑density open‑cell foam that holds low‑viscosity fork lube and releases it gradually to the dust seal/lower leg interface. That controlled transfer of lubrication reduces initial stiction, helps damping feel remain consistent, and lowers wear on the dust seal — delivering smoother travel and longer service intervals between full lower‑leg rebuilds.

Key Features & Real‑World Benefits

Purpose-built construction: Each 32mm x 5mm ring is trimmed to OEM tolerances for a precise fit in the fork outer-leg channel. The open‑cell polyurethane-style foam absorbs and reservoirs lubricant, keeping the dust seal primed for immediate lubrication on every compression. What you’ll notice on the trail: reduced start‑up stiction after sitting, crisper small‑bump compliance, fewer false positives from dry seals, and a measurable extension of dust seal life when replaced at recommended service intervals.

Fit, Compatibility & What's Included

This kit (20 pieces) is an OEM RockShox spare for the following models: SID A1–A3, REBA A2–A3, BLUTO A1 and SID SL C1 (2021). Use the Manufacturer Part # 11.4015.496.010 or SRAM Model ID FS‑SPP‑A0 to confirm fit with your fork. Physical kit size: 32mm diameter x 5mm thickness per ring. Shipping dimensions are compact (7" x 5" x 0.3") and weight is 0.25 lb, making this a simple, low‑bulk part to keep in the workshop for routine lower‑leg services. These foam rings are intended to complement dust seals and wipers — they are not a replacement for worn or leaking seals.

Who This Is For

This kit is aimed at mountain bikers, mechanics, and bike shops who perform regular fork lower‑leg services on RockShox 32mm‑stanchion forks. If you ride frequently, do long events or live in dusty conditions, replacing the foam rings during lower‑leg service helps maintain smoothness and reduces the chance of seal abrasion. It's also a must‑have for home mechanics who prefer OEM parts for reliable fit and predictable performance. If you're rebuilding dust seals, installing new wipers, or prepping forks for aggressive trail use, keep a kit on hand.

Key Features

  • ✓ OEM RockShox part #11.4015.496.010 — guaranteed fit
  • ✓ 32mm diameter x 5mm thickness foam rings (20 pieces)
  • ✓ Compatible with SID A1–A3, REBA A2–A3, BLUTO A1, SID SL C1 (2021)
  • ✓ High‑density open‑cell foam retains and releases fork lube
  • ✓ Reduces start‑up stiction and improves small‑bump compliance
  • ✓ Easy to replace during standard lower‑leg service
  • ✓ Extends dust seal life and maintains damping consistency

Product Identifiers

Vendor Item # 11.4015.496.010
UPC 710845652516

Frequently Asked Questions

Are these genuine RockShox/OEM parts?

Yes. This kit is the genuine RockShox OEM foam ring kit (Manufacturer Part # 11.4015.496.010, SRAM Model ID FS‑SPP‑A0) supplied as 20 pieces per package.

How do I install the foam rings?

Install during a lower‑leg service: remove the lowers, clean the lower‑leg channel, slide the foam ring onto the stanchion or into the lower leg seating groove, then reinstall the dust wiper and reassemble. Follow RockShox service instructions or a shop if you’re unfamiliar with fork service.

How often should I replace the foam rings?

Replace the foam rings at each lower‑leg service or if they appear compressed, contaminated, or degraded. For regular trail use expect to change them with dust wipers every 50–200 hours depending on conditions.

Can I use these with aftermarket dust seals or wipers?

Generally yes — as long as the aftermarket parts are designed for 32mm stanchions and match the OEM lower‑leg geometry. Always verify dimensions and clearances before final assembly.

Will these fix oil leaks from my fork?

No. Foam rings are lubrication reservoirs that help seal longevity and reduce stiction. Visible oil leaks typically mean worn foam is not the cause — check dust seals, air/oil seals, and internal O‑rings for damage and replace as needed.

Is one kit enough for my fork service?

This package contains 20 foam rings — enough for many services and multiple forks. Most single‑fork lower‑leg services require 2 rings (one per leg), so one kit will cover numerous services or multiple bikes.

Buying Guide

When buying fork foam rings, always match the diameter, thickness and manufacturer part number to your fork model. Foam rings are inexpensive, but incorrect size or density will reduce effectiveness and can cause interference with dust seals. If you're doing a full service, consider purchasing a dust seal/wiper kit alongside foam rings for the best results. Keep a spare kit in the shop if you regularly service multiple forks or ride in dusty/muddy conditions.

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