Zipp 177 Freehub Body Seal
Zipp

Zipp 177 Freehub Body Seal

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OEM replacement seal and shim for Zipp 177 freehub bodies (SRAM model HU-SPP-A0). Restores sealing, prevents contamination, and prolongs freehub life.

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Product Details

Overview & Technology

Zipp 177 Freehub Body Seal (Part #11.1918.052.000) is the OEM wheel seal and shim designed specifically for the Zipp 177 freehub assembly. Supplied as a single sealed unit (Product Number: 090847), this component includes the precision seal and matching shim to restore the original protection and spacing on your freehub body. Construction and materials: the replacement uses a precision-molded elastomer sealing lip for water and grit exclusion combined with a corrosion-resistant shim to maintain correct lateral spacing. Installing the correct seal and shim prevents debris ingress, reduces premature bearing wear, and keeps shifting engagement crisp under wet or dirty conditions.

Key Features

Direct OEM fit and finish: manufactured to Zipp's tolerances and stamped with Manufacturer Part #: 11.1918.052.000 for exact compatibility with the 177 freehub assembly. This is the factory replacement for SRAM Model ID HU-SPP-A0. • Precision elastomer seal designed to keep water and road grime out of the freehub internals. • Corrosion-resistant metal shim maintains proper freehub spacing and axle preload. • Sold as a single unit for quick, cost-effective service during hub maintenance.

Fit & Compatibility

This seal and shim set is intended specifically for Zipp 177 wheel freehub bodies using SRAM's HU-SPP-A0 interface. Confirm compatibility by checking your wheel's spare parts list or by matching the Zipp Manufacturer Part Number 11.1918.052.000. It is not a universal fit — other Zipp models, Shimano HG, or Campagnolo freehub interfaces may require different seals or shims. Practical shipping info: ships in compact packaging (12.3" x 9.1" x 4.6") and weighs approximately 2.5 lb — ideal for single-part replacements or stocking a shop service bench. Basic hub disassembly tools and light grease are required for installation; if you're unsure, have a professional mechanic handle the service to preserve hub warranty and performance.

Who It's For

Designed for road riders, mechanics, and bike shops who own or service Zipp 177 wheelsets and want an OEM-quality replacement to maintain hub longevity. If you've noticed water ingress, rough bearing feel, or play after a service, replacing the seal and shim is a quick, effective corrective step. It's also useful for riders who perform their own maintenance and want to keep a spare on hand — a small investment that prevents costly freehub or bearing replacements down the road.

Key Features

  • ✓ OEM replacement seal and shim for Zipp 177 freehub bodies
  • ✓ Specifically matches SRAM model ID HU-SPP-A0 for exact fit
  • ✓ Precision elastomer sealing lip repels water and road grit
  • ✓ Corrosion-resistant metal shim maintains correct freehub spacing
  • ✓ Sold as a single unit for quick, low-cost service
  • ✓ Manufacturer part number 11.1918.052.000 for easy identification
  • ✓ Compact shipping size, perfect for workshop spares or mail orders

Product Identifiers

Vendor Item # 11.1918.052.000
UPC 710845768651

Frequently Asked Questions

How do I know this seal fits my wheel?

This part is the OEM seal and shim for the Zipp 177 freehub body and matches SRAM Model ID HU-SPP-A0. Verify fit by matching the manufacturer part number (11.1918.052.000) or checking your wheel's spare parts list. If your freehub uses a different model or interface, this seal may not be compatible.

Can I install the seal myself?

Yes, if you're comfortable with hub disassembly and reassembly using basic socket/hex tools. Clean the hub shell, apply light grease to seat the seal, and fit the shim to maintain spacing. If you're uncertain, have a qualified mechanic install it to avoid damage to the freehub or bearings.

How often should I replace this seal?

Replace seals whenever you service the freehub or if you detect water ingress, excessive grit, or degraded shifting performance. For frequent wet-weather or winter riding, inspect seals annually and replace as needed to preserve bearing life.

Is this compatible with Shimano or Campagnolo freehubs?

No. This seal/shim assembly is specifically engineered for Zipp 177 freehub bodies with the SRAM HU-SPP-A0 interface. Shimano, Micro Spline, and Campagnolo freehubs use different dimensions and sealing solutions.

Does this part include bearings or grease?

No. This listing contains the freehub body seal and shim only. Bearings and grease are separate parts and should be serviced or replaced according to your hub maintenance schedule.

Is this a genuine Zipp part and covered by warranty?

This is the OEM replacement item matching Zipp Manufacturer Part #: 11.1918.052.000. Warranty coverage depends on the wheel's original warranty terms — retain purchase records and consult Forest Bikes support or Zipp for warranty claims.

Buying Guide

When buying a freehub body seal, confirm the exact freehub model and part number — seals are precision parts and are not universally interchangeable. Look for OEM part numbers (like Zipp 11.1918.052.000) or manufacturer model IDs (SRAM HU-SPP-A0) to ensure a correct match. Consider purchasing seals when you buy bearings or perform a hub overhaul so you can replace all wear items together. Keep basic hub service tools and light, high-quality grease on hand, or have a trusted mechanic install the seal to maintain hub performance and longevity.

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