Cane Creek 40 Series Bottom IS52
40 Series Bottom IS52
Cane Creek

Cane Creek 40 Series Bottom IS52

In Stock

Cane Creek 40-Series IS52 lower headset assembly delivers durable, lightweight performance with sealed cartridge bearings and precision aluminum cups — engineered for integrated mountain frames.

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Available Options

Option Price Availability
Cane Creek, 40 Series, Headset Bottom Assembly, IS/52/30/H1/K, 50g — In Stock
Cane Creek, 40 Series, Headset Bottom Assembly, IS/52/40/H1/K, 50g — In Stock

Product Details

Overview & Technology

Cane Creek's 40-Series brings premium engineering down to a value-focused package. Built from the lessons of the 110-Series, the 40-Series lower assembly (IS52/30) pairs an aluminum pressed cup with a sealed cartridge bearing for low friction and long life under real-world riding conditions. Key technical details: sealed cartridge bearing grade, 30mm crown race diameter, and a 52mm lower cup designed for IS52 frames. Precision-machined cups and durable seals reduce ingress of water and grit while keeping rolling resistance low.

Key Features & Real-World Benefits

Sealed cartridge bearing: provides predictable, service-friendly performance — easy to swap when worn and less sensitive to contamination than loose bearings. The sealed design keeps bearings freerunning and reduces maintenance intervals on trail and all-mountain use. Lightweight aluminum construction: machined cups deliver a strong, corrosion-resistant interface with your frame while keeping weight down (approx. 50 g). The 30mm crown race diameter ensures a secure interface with standard forks.

Fit, Compatibility & Specs

This product is the lower headset assembly intended for IS52/30 frames (SHIS: IS52/30). It fits frames with a 52mm lower cup seat and forks with a 30mm crown race diameter — ideal for 1-1/8" steerer setups. Variants include IS/52/30/H1/K and IS/52/40/H1/K to match different internal seat depths and frame tolerances. Manufacturer part #: BAA0087, product #: 150205. Shipping dimensions 2.7" x 2.7" x 0.9" and weight ~0.05 lb (50 g). Compatible with Cane Creek 40-Series tops (short 9mm or tall 15mm covers) when building a full assembly.

Who It's For

This lower assembly is aimed at mountain riders, builders and mechanics who want a reliable, serviceable lower cup without paying for flagship models. It's a great choice for trail, enduro-light builds and riders upgrading or replacing worn integrated headset lowers. If you value low maintenance, predictable bearing feel and parts commonality across Cane Creek's 40-Series (interchangeable tops and bottoms), this lower IS52 assembly is a practical, long-lasting option.

Key Features

  • ✓ Sealed cartridge bearing for low maintenance and smooth rollover
  • ✓ Precision-machined aluminum lower cup — lightweight and corrosion resistant
  • ✓ Designed for IS52/30 frames with a 30mm crown race diameter
  • ✓ Approx. 50 g weight keeps build light without sacrificing strength
  • ✓ Interchangeable with other 40-Series tops for flexible configurations
  • ✓ Manufacturer part BAA0087; precise fit for integrated mountain head tubes
  • ✓ Over 40 configurations in the 40-Series to match most frame specs

Specifications

Bearing Grade Sealed cartridge
Crown Race Diameter 30mm
Lower Cup 52mm
Headset Type Integrated
Material Aluminum
Primary Color Black
S.H.I.S. IS52/30
Steerer Tube 1-1/8''
Stack Height 1
Headset Position Lower
SHIS Lower IS52/30

Product Identifiers

Vendor Item # BAA0087
UPC 840226095226

Frequently Asked Questions

What frames does IS52/30 lower fit?

The IS52/30 lower cup fits integrated head tubes that accept a 52mm lower cup seat and a 30mm crown race. It's a common standard on many modern mountain frames — always verify your frame's SHIS spec (IS52/30) before purchase.

Can I replace just the lower assembly or do I need a full headset?

You can replace just the lower assembly if the top assembly and bearings are still compatible. Cane Creek's 40-Series is designed for interchangeability, so match SHIS sizing and stack height when mixing parts.

How do I install the lower cup without damaging it?

Use a proper headset press and the correct adapter to squarely press the cup into the frame. Avoid hammering directly on the cup — press tools distribute force to prevent deformation and ensure proper alignment.

How long do the sealed bearings last?

Bearing life depends on riding conditions; sealed cartridge bearings typically last years under normal trail use but can wear faster in very wet or muddy environments. They are quick to replace as a cartridge unit when service is required.

What's the difference between 40-Series and 110-Series?

The 110-Series is Cane Creek's premium option with higher-grade bearings and some additional refinements. The 40-Series shares many design features (interchangeability, proven geometry) but offers a better value with robust performance for most riders.

Does this include the crown race?

This listing is the lower headset assembly; it pairs with a 30mm crown race diameter. Confirm whether your fork's crown race is included with your fork or order the matching Cane Creek crown race separately if needed.

Buying Guide

When buying a lower headset assembly, first verify your frame's SHIS specification — the IS52/30 means a 52mm lower cup seat and a 30mm crown race. Decide between sealed cartridge vs. loose bearings based on preference: sealed cartridges are easier to replace, while loose bearings can be serviced but require more care. Consider stack heights and compatibility with the top assembly; the Cane Creek 40-Series offers interchangeable parts so you can mix tops (9mm or 15mm cover heights) and bottoms to match your frame and fork. If you're unsure about press-fit tolerances, consult a shop — correct installation protects frame integrity and ensures long headset life.

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