ASTRO

ASTRO ZS44/ZS56 Kup on-line

WEIGHT

120g

STACK HEIGHT

9mm/2.8mm

Description

Top quality headset with zero stack (semi-integrated) top and bottom parts. ZS44/ZS56 S.H.I.S. type. Cups and ultra-low profile top covers are made of aluminum.

High-quality precision sealed 45/45 bearings with anti-rust titanium coating and special high-density grease protecting against water penetration.

They come with two alu 7075 crown races, one for tapered 1.5" and the second for 1-1/8” forks.

Specification

WEIGHT

120g

COLOR

Black anod.

CLAMP DIAMETER

28.6

HEADSET TYPE

ZS44/ZS56

BEARINGS TYPE

41x30.15x7mm/52x40x8mm

FORK STEERER TYPE

tapered 1.5"/standard 1-1/8"

STACK HEIGHT

9mm/2.8mm

Downloads

HEADSETS SPECIFICATION

COMPLETE BIKES GEOMETRY 2026

FULL-SUSPENSION FRAMES GEOMETRY 2026

HARDTAIL FRAMES GEOMETRY 2026

HOW TO CHOOSE THE PERFECT BIKE / FRAME SIZE

FAQ

Can I pre-order a bike/bike?

If you're interested in purchasing our products, we recommend contacting one of our distributors from this list: Dartmoor Distribution. If your country isn’t listed, feel free to email us at sales@dartmoor-bikes.com - we’re happy to help!

Can I run a fork with a different amount of travel?

Yes! Each frame has a recommended fork travel range, which you can find in the Geometry Chart under “Recommended Fork Travel.”

How to assemble Dartmoor bikes?

Our bikes are shipped 95% assembled in a single box. You'll just need to install the handlebar, seat post, and front wheel.

Do you offer bearing kits?

Yes! We provide bearing kits for all full-suspension frames in our lineup. These are available through your local dealer.

Can I run wider tires?

Each frame's maximum tire size is listed in the specification chart. Please refer to it for guidance.

Where can I find the torque specs?

A complete user manual, including all torque specs, is available for each frame. You can find it at the bottom of the product page in the Downloads section.

What size do I need?

Check our Size Guide If you're still unsure, the best way to find the perfect fit is to test the bike yourself!