Cane Creek 110 Series Bottom IS41
Cane Creek

Cane Creek 110 Series Bottom IS41

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Premium Cane Creek 110 Series lower headset assembly (IS41/30/H1) with precision sealed bearings and CNC-machined cover. Lightweight, serviceable, and built to fit integrated 41mm headtubes.

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Product Details

Overview & Technology

The Cane Creek 110 Series Bottom IS41 is engineered as a premium lower headset assembly for integrated frames with a 41mm internal headtube. It combines precision stainless-steel sealed bearings, effective dust and water seals, and CNC-machined covers to deliver smooth steering and long-term durability in real-world riding. 110 Series components are designed to be mixed and matched — buy complete assemblies or replace just the top or bottom as needed. This IS41/30/H1 variant is ultralight (24.9g for the bottom), easy to service, and built to work with a broad range of straight and tapered fork steerer setups while maintaining clean lines and a minimal stack height.

Key Features & Construction

Precision bearings and robust seals: The 110 Series uses high-grade, precision stainless-steel cartridge bearings with multi-lip dust seals to keep contaminants out and extend bearing life. The seal geometry is designed to reduce drag while maintaining protection on wet and muddy rides. CNC-machined covers and durable finishes: Bearing covers and cups are CNC machined for tight tolerances and consistent fit. Finishes resist corrosion and wear from cable rub and trail debris. The assembly is lightweight without sacrificing strength, making it suitable for performance-focused mountain builds.

Fit, Compatibility & Sizing

What IS41/30/H1 means: This bottom is made for integrated headtubes with a 41mm internal diameter (IS41). The "/30" designation indicates it accepts the 30mm lower bearing/crown race interface common to many 1-1/8" straight and tapered steerer forks. H1 denotes the low-profile lower stack variant used to fine-tune headset stack height. Before ordering, confirm your frame's lower headtube ID is 41mm and check whether your fork uses a 30mm lower bearing or crown race. The 110 Series is intentionally modular — pair this bottom with the short (9mm) or tall (15mm) top covers, or use conversion cups for EC or other shell standards when needed.

Who This Is For

This lower assembly is aimed at mountain bikers building or maintaining integrated-headtube frames who want a premium, lightweight headset solution that balances serviceability and performance. It's ideal for trail, all-mountain, and bike OEM/DIY builds where smooth steering and low drag matter. Mechanically-minded riders and bike shops will appreciate the ability to replace only the bottom or to mix tops and bottoms for custom stack heights and compatibility. Riders who need a sealed, durable lower bearing assembly that won't add unnecessary weight will find this an excellent match.

Key Features

  • ✓ IS41 lower cup for integrated 41mm headtube shells
  • ✓ Precision stainless-steel sealed cartridge bearings for long life
  • ✓ Lightweight 24.9g bottom assembly reduces overall bike weight
  • ✓ CNC-machined covers and tight tolerances for reliable fit
  • ✓ Multi-lip seals reduce contamination without excess drag
  • ✓ Modular design — mix with 9mm or 15mm tops and EC conversions
  • ✓ Serviceable and replaceable parts extend headset lifespan

Product Identifiers

Vendor Item # BAA0140
UPC 840226096162

Frequently Asked Questions

Will this bottom fit my frame?

This bottom fits frames with an integrated lower headtube ID of 41mm (IS41). Confirm your frame's lower headtube internal diameter and that your fork uses the 30mm lower bearing/crown race interface before purchase.

Can I mix this bottom with other 110 Series tops?

Yes. Cane Creek designed the 110 Series to be modular. You can pair this IS41 bottom with short (9mm) or tall (15mm) tops, or with other conversion cups to achieve the stack height and compatibility you need.

Are the bearings serviceable or sealed cartridges?

The 110 Series uses precision sealed cartridge bearings designed for long life and low maintenance. While sealed bearings are not intended for full disassembly, they can be replaced individually when wear or damage occurs.

Is this suitable for tapered forks?

Yes — the "/30" interface is compatible with many tapered fork crown races that use a 30mm lower bearing. Verify your fork's crown race diameter and steerer spec to ensure a proper match.

How durable are the seals against mud and water?

Cane Creek equips the 110 Series with multi-lip dust and water seals engineered to shed mud and moisture while keeping friction low. In harsh conditions, periodic inspection and replacement of seals/ bearings will keep performance optimal.

What is the weight of this bottom assembly?

The listed variant (IS/41/30/H1) weighs approximately 24.9 grams, making it a lightweight option for performance builds without compromising durability.

Buying Guide

When choosing a headset bottom assembly, prioritize compatibility with your frame's headtube standard and your fork's crown race diameter. The Cane Creek 110 Series is modular — selecting the correct lower (IS41) ensures a secure fit in integrated frames while allowing you to match top covers for desired stack height. Look for sealed cartridge bearings and robust seals if you ride in wet or muddy conditions. Consider spare bearings or seal kits for long-term maintenance, and always install with a proper headset press for even seating and trouble-free performance.

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