Cane Creek 40 Series Bottom ZS56
40 Series Bottom ZS56
40 Series Bottom ZS56
Cane Creek

Cane Creek 40 Series Bottom ZS56

In Stock

Cane Creek 40-Series ZS56 lower headset cup—sealed cartridge bearings and machined aluminum for low weight, long life and smooth steering in ZS56/30 builds.

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Available Options

Option Price Availability
Cane Creek, 40 Series, Headset Bottom Assembly, ZS/56/30/H4/K, 88g — In Stock
Cane Creek, 40 Series, Headset Bottom Assembly, ZS/56/40/H4/K, 65g — In Stock
Cane Creek, 40-Series ZS Bottom 55mm 1.5", Scott, Diamondback and Haro ZS55/40 — In Stock

Product Details

Overview & Technology

The Cane Creek 40-Series Bottom ZS56 brings proven 110-Series design cues into a value-focused package. Built around sealed cartridge bearings and precision-machined aluminum cups, this lower assembly is engineered for consistent, low-friction steering and long service life under real trail conditions. Designed in Fletcher, NC, the 40-Series uses interchangeable parts and over 40 configuration options so you can match the exact SHIS standard your frame needs. The ZS56/30 lower accepts a 30mm crown race and is a ZeroStack (ZS) press-fit lower cup sized for a 56mm headtube ID.

Key Features & Construction

Materials and bearings: The ZS56 lower is constructed from CNC-machined aluminum for an ideal strength-to-weight balance and corrosion resistance. It uses sealed cartridge bearings that keep out grit and water—reducing maintenance and preserving smooth rotation even after long rides. Precision details: Crown race diameter is 30mm and stack height is a low 4mm, keeping front-end geometry and cable routing tidy. The assembly is supplied in a sleek black finish and follows Cane Creek's consistent graphic and service standards for easy part swaps.

Fit, Compatibility & Installation

SHIS code ZS56/30: This bottom assembly is a ZeroStack lower designed for frames with a 56mm internal headtube diameter and a 30mm bearing/crown race interface—commonly used on mountain and trail bikes with a 1-1/8" steerer or compatible top assemblies. Confirm your frame's SHIS code before ordering. This product is a lower cup assembly (headset position: lower). It pairs with compatible Cane Creek 40-Series or other-brand ZeroStack tops that match the stack and SHIS format. Press-fit installation requires a headset press or appropriate drift and a clean headtube to avoid damage—professional fitting is recommended if you don't have the right tools.

Who It's For

This bottom assembly is ideal for mountain riders, mechanics and bike builders who need a durable, low-maintenance lower headset cup that balances performance and value. It's a great upgrade for stock headsets, a lightweight option for custom builds, and a dependable replacement part for trail bikes. If you want sealed bearings, predictable service intervals and easy parts interchangeability, the Cane Creek 40-Series ZS56 gives you a dependable lower cup without the premium price of higher-end series.

Key Features

  • ✓ Sealed cartridge bearings for low maintenance and smooth steering
  • ✓ CNC-machined aluminum lower cup for strength and reduced weight
  • ✓ SHIS ZS56/30: fits 56mm headtube with 30mm crown race
  • ✓ ZeroStack (ZS) design keeps stack height minimal at 4mm
  • ✓ Available in multiple variants — 88g and 65g options
  • ✓ Interchangeable with other Cane Creek 40-Series components
  • ✓ Durable black finish, precision engineered in Fletcher, NC
  • ✓ Over 40 configurations to match most mountain bike setups

Specifications

Bearing Grade Sealed cartridge
Crown Race Diameter 30mm
Lower Cup 56mm
Headset Type ZeroStack
Material Aluminum
Primary Color Black
S.H.I.S. ZS56/30
Steerer Tube 1-1/8''
Stack Height 4
Headset Position Lower
SHIS Lower ZS56/30

Product Identifiers

Vendor Item # BAA0089K
UPC 840226095004

Frequently Asked Questions

What does ZS56/30 mean?

ZS56/30 is the SHIS designation: ZS = ZeroStack (press-fit), 56 = lower cup inner diameter for a 56mm headtube, and 30 = bearing/crown race interface diameter (30mm). It tells you the exact fit standard the lower cup uses.

Will this work with a tapered steerer fork?

This bottom assembly is sized for a 30mm crown race (commonly 1-1/8" steerers). For tapered forks (1-1/8" to 1.5"), you typically need a different lower bearing size such as ZS56/40. Check your fork's crown race diameter and your frame's SHIS code before selecting a variant.

Is the crown race included with the bottom assembly?

The bottom assembly includes the sealed cartridge bearing and press-fit lower cup. Crown race inclusion can vary by SKU—confirm the specific variant or packaging details on the product page before purchase, or add a matching crown race if your fork does not already include one.

How difficult is installation?

Press-fit lower cups require a headset press or proper drift tools and a clean, undamaged headtube. If you don’t have the correct tools or experience, we recommend professional installation to avoid damaging the frame or cup.

How often should I service the bearings?

Sealed cartridge bearings are low-maintenance; however, ride conditions determine service intervals. Inspect annually or sooner if you notice play, roughness, or dirt ingress. Replace bearings when rotation feels gritty or loose—sealed cartridges are replaced rather than rebuilt.

Can I mix Cane Creek tops with other brands?

Yes—so long as the top and bottom SHIS codes match and stack heights are compatible. Cane Creek 40-Series follows consistent sizing and interchangeability conventions, but always verify dimensions and stack heights before mixing brands.

Buying Guide

When choosing a lower headset assembly, the most important factor is the SHIS standard: match the ZS/ID number to your frame headtube (ZS56 in this case) and the bearing/crown race diameter (30mm). Decide whether you need a short or tall top cover to clear your stem and cables, and pick sealed cartridge bearings for lower maintenance on trail bikes. Also consider weight and serviceability: aluminum cups provide excellent strength-to-weight, and sealed cartridges are simple swaps when they wear out. If you’re unsure about press-fit installation, budget for a professional headset press service to protect your frame and ensure perfect alignment.

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