First Components-Headsets

BEARING ANGLE:	36* / 45*
BEARING OD:	41.8mm / 41.8mm
BEARING:	Sealed Angular Contact
CROWN RACE:	30mm
STACK HEIGHT:	27.7mm
WEIGHT:	112g (with star-fangled nut and top cap)

$24.99US*

* Plus $5.00US Shipping

SEMI-INTEGRATED HEADSETS

BLOG H

ZS44/28.6 - ZS44/30

The BLOG-H is a semi-integrated threadless headset designed for frames with 1 1/8" headsets where the alloy bearing cups are NOT pressed into the frame.

The BLOG-H uses Sealed ANGULAR CONTACT BEARINGS.

Angular Contact bearings are better for headsets because they distibute both radial and axial loads evenly prolonging bearing life.

BEARING ANGLE:	36* / 45*
BEARING OD:	44mm / 44mm
BEARING:	Sealed Angular Contact
CROWN RACE:	30mm
STACK HEIGHT:	13mm
WEIGHT:	112g (with star-fangled nut and top cap)

$24.99US*

* Plus $5.00US Shipping

INTEGRATED HEADSETS

IS42/28.6 - IS42/30

The RB is an integrated threadless headset designed for frames with 1 1/8" headsets.

The RB uses Sealed ANGULAR CONTACT BEARINGS.

ANGULAR CONTACT BEARINGS are better for headsets because they distibute both radial and axial loads evenly prolonging bearing life.

BEARING ANGLE:	45* / 45*
BEARING OD:	41.8mm / 41.8mm
BEARING:	Sealed Angular Contact
CROWN RACE:	30mm
STACK HEIGHT:	16.4mm
WEIGHT:	96g (with star-fangled nut and top cap)

$24.99US*

* Plus $5.00US Shipping

INTEGRATED TAPERED HEADSETS

M44

IS42/28.6 - IS47/33

The M44 headset is designed for tapered headsets that have 1 1/8" upper and 1 1/4" lower races. It is designed to the FSA standard.

The M44 headset comes with a top cap and star fangled nut which is NOT suitable for carbon steerers. If you have a carbon steerer you will need to purchase a compression plug designed for carbon steerers.

The M44 uses Sealed ANGULAR CONTACT BEARINGS.

Angular Contact bearings are better for headsets because they distibute both radial and axial loads evenly prolonging bearing life.

BEARING ANGLE:	45* / 45*
BEARING OD:	41.8mm / 46.8mm
BEARING:	Sealed Angular Contact
CROWN RACE:	33mm
STACK HEIGHT:	9.6mm
WEIGHT:	74g (with star-fangled nut and top cap)

$24.99US*

* Plus $5.00US Shipping

M40

IS42/28.6 - IS52/40

The M40 headset is designed for tapered headsets that have 1 1/8" upper and 1 1/2" lower races. It is designed to the FRUSTUM IS standard used by Cane Creek..

The M40 headset comes with a top cap and star fangled nut which is NOT suitable for carbon steerers. If you have a carbon steerer you will need to purchase a compression plug designed for carbon steerers.

The M40 uses Sealed ANGULAR CONTACT BEARINGS.

Angular Contact bearings are better for headsets because they distibute both radial and axial loads evenly prolonging bearing life.

BEARING ANGLE:	45* / 45*
BEARING OD:	41.8mm / 52mm
BEARING:	Sealed Angular Contact
CROWN RACE:	39.8mm
STACK HEIGHT:	9.6mm
WEIGHT:	78g (with star-fangled nut and top cap)

$29.99US*

* Plus $5.00US Shipping

COMPRESSION PLUG (for carbon steerers)

BDop Compression Plug

expander bolts

The BDOP COMPRESSION PLUG is designed specifically for forks with carbon steerers.

It extends 18mm into the steerer tube providing a large contact area.

The BDOP COMPRESSION PLUG is knurled where it comes into contact with the carbon steerer to give plenty of grip but leaving the carbon undamaged.

It comes with a black, alloy top cap without ANY logos for a clean, uncluttered look.

Weight: 42g

$11.99US*

* plus $5.00US shipping

Headset Specs Explained

With a proliferation of headset specs in the last few years it has become increasingly difficult to determine which headset will fit in which frame. Hopefully explaining the jargon used to identify headsets will help make it easier to get the headset you need.

This is an example of a code used to describe a particular headset.

The first group of numbers (to the left of the vertical line) describe the upper part of the headset while the second group of numbers (to the right of the vertical line) describe the part of the headset that will fit into the bottom of the head tube.

The first letters 'EC' refer to the type of headset being described and is explained above.

The second set of numbers ' 34' refers to the size of the hole in the top of your head tube where the headset cups or bearings will go.

The second number "28.6" refers to the diameter of the fork where you will clamp the stem. Most contemporary bikes use the '28.6' size which is a 1 1/8" fork.

The vertical line seperates the upper and lower parts of the headset.

The first letters 'EC' refer to the type of headset being described and is explained above.

The second set of numbers "34" refers to the size of the hole in the bottom of your head tube where the headset cups or bearings will go.

The '30' refers to the size of the crown race that will fit on the sterrer tube of the fork that will be installed with the frame.

We hope that makes selecting the correct headset for your frame a little easier. If you are still unsure of what you need please contact us at our sales email and hopefully we can sort things out for you.

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