Zipp Ceramicspeed
Ceramicspeed
Zipp

Zipp Ceramicspeed

Out of Stock

CeramicSpeed sealed cartridge bearing upgrade for Zipp/SRAM hubs (HU‑SPP‑A0). High-purity ceramic rolling elements reduce friction and increase durability for road race wheels.

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Available Options

Option Price Availability
Zipp, Ceramic, Sealed Cartridge Bearing, 61803 + 61903 — Out of Stock
Zipp, Ceramicspeed, Sealed Cartridge Bearing, 61803 Modified, Ceramic, Kit — Out of Stock

Product Details

Overview & Technology

CeramicSpeed by Zipp is a precision sealed cartridge bearing upgrade built to drop rolling resistance and extend service intervals on high-performance road wheels. This kit replaces standard steel cartridges with ceramic-enhanced units — listed as 61803 + 61903 and available in a modified 61803 kit — tailored to the SRAM Model ID: HU‑SPP‑A0 fitment. Manufacturer Part #: 00.1918.183.002. Product Number: 090817. Construction combines high-purity silicon nitride (Si3N4) ceramic balls with hardened stainless-steel races and precision elastomer seals. The result is a tighter manufacturing tolerance, lower friction coefficient, superior corrosion resistance, and a noticeably smoother spin under load — all essential qualities for road and time-trial applications where efficiency matters.

Key Features & Real-World Benefits

Low rolling resistance: Ceramic balls and precision grinding reduce energy loss so you transfer more watts to the road. Riders will notice quicker spin-ups, improved coasting, and small but measurable gains on long efforts and climbs. Durability and corrosion resistance: Ceramic balls are harder and wear more slowly than steel, while sealed cartridges keep contaminants out. That means longer service intervals and dependable performance in mixed weather rides and training miles.

Fit, Installation & Compatibility

This upgrade is specified for Zipp hubs using the SRAM Model ID HU‑SPP‑A0 and comes in the standard 61803 + 61903 sealed cartridge sizes (with a modified 61803 kit variant available). Confirm compatibility by matching your hub's model ID and cartridge dimensions before purchase. Shipping dimensions: 14" x 9" x 4.5"; weight: 2 lb. Installation requires a proper hub press or compatible bearing press tool and basic wheel service skills. Although sealed cartridges are straightforward to swap, we recommend professional installation if you don't have the correct press or experience — improper pressing can damage hubs or bearings. Use light assembly grease where specified and follow hub manufacturer torque and spacing recommendations.

Who This Upgrade Is For

Designed for road cyclists, racers, and serious enthusiasts who want to squeeze extra efficiency and longevity from their wheelset without a full hub replacement. If you race crits, time trials, or prioritize low friction and fast acceleration, these ceramic cartridges are a meaningful performance upgrade. They also suit mechanics and shops servicing Zipp wheels that demand consistent, long‑lasting bearing performance across training and racing seasons. Recreational riders seeking maintenance simplicity and improved bearing life will also appreciate the sealed cartridge design.

Key Features

  • ✓ Precision silicon nitride ceramic balls for reduced rolling resistance
  • ✓ Hardened stainless-steel races with high tolerance grinding for smooth spin
  • ✓ Sealed cartridge design keeps out water, grit, and road contaminants
  • ✓ Direct fit for SRAM HU‑SPP‑A0 hubs — check hub model ID first
  • ✓ Modified 61803 kit option available for special Zipp hub variants
  • ✓ Lower maintenance and longer service intervals versus standard steel
  • ✓ Race-ready upgrade that improves coasting and spin-up response

Specifications

Bearing Grade Zipp Ceramic
Number 61803 + 61903
Material Ceramic

Product Identifiers

Vendor Item # 00.1918.183.002
UPC 710845751332

Frequently Asked Questions

Will these bearings fit my Zipp hub?

These sealed cartridge bearings are specified for hubs using the SRAM model ID HU‑SPP‑A0 and come as 61803 + 61903 sizes. Verify your hub's model ID and existing cartridge dimensions before ordering; if in doubt, contact our tech team with your hub serial/model.

Are these fully ceramic or ceramic hybrid bearings?

This CeramicSpeed upgrade uses silicon nitride (Si3N4) ceramic balls with hardened stainless-steel races and precision seals — a ceramic hybrid design that balances low friction and durable raceways for cartridge-style hub systems.

Can I install these at home, or do they require a shop?

Swapping sealed cartridges generally requires a bearing press or hub-specific tool to avoid damage. Experienced home mechanics with the correct press can install them safely; otherwise, we recommend professional installation to ensure correct seating and alignment.

Do ceramic bearings need special grease or maintenance?

Sealed cartridges arrive lubricated and need no immediate re-greasing. For long-term care, periodic inspection and replacement when wear appears is best. If re-greasing is required, use a light, low-friction bearing grease recommended by the hub or bearing manufacturer.

How much speed or efficiency gain can I expect?

Performance gains depend on riding conditions and drivetrain setup; ceramic bearings typically offer modest reductions in rolling resistance that translate to smoother spin-up and slightly higher coasting speeds. For racers and time-trialists, the small efficiency gains can be meaningful over longer efforts.

What warranty or lifespan should I expect?

CeramicSpeed and Zipp follow manufacturer warranty policies — check the included documentation for specifics. Lifespan varies by riding conditions, load, and maintenance, but ceramic hybrids generally outlast standard steel cartridges under similar use.

Buying Guide

When choosing sealed cartridge bearings for road wheels, prioritize exact fit, material quality, and ease of installation. Ceramic hybrid cartridges like this CeramicSpeed upgrade offer a balance of low friction and durability; they work best as replacements for worn cartridges or as a targeted upgrade on race wheels. Before buying, confirm hub model ID and cartridge dimensions, decide whether you'll install them yourself or have a mechanic press them in, and consider the riding conditions you face—ceramic upgrades pay off most for riders who value marginal gains in efficiency and smoother wheel performance.

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