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Headset Bearings
Make your old headset work like new. Shockcraft has replacement cartridge bearings to fit most common headsets and frames.
From Cane Creek compatible ACB3645 bearings to Campy compatible 4545 bearings and even replacement bearings for Cannondale's own 1.5 inch headset, Shockcraft has them all. We have high quality chromium steel across the range with stainless steel available in some sizes.
These bearings also fit several non-headset applications, such as the pivots in GT's I-drive suspension bikes. Contact us for help with sizing.
Headset Bearing Identification Chart (PDF)
Monocrome 1 1/8" Headset
Shockcraft also has its own high quality headsets with cartridge bearings for standard 1 1/8" frames and forks. Available with chromium steel or stainless steel bearings.
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1 1/8" ACB 870E 4545 Headset Bearing 41.8 mm OD (FSA)
US$17.70No Longer Available
Alternative bearing option: Campy 4545 1 1/8" 1RS Headset Bearing (Monocrome)
Headset bearing by FSA
45 x 45 degree ACB
MR121
ID: 30.5 mm, OD: 41.8 mm, W: 8 mm
FSA Part Code: 160-1647 Learn More -
1" ACB 6805 FC Stainless Steel Suspension & Headset Bearing (Enduro MAX)
US$37.99Available on backorder
Stainless Steel ACB (Angular Contact Bearing)
Learn More
36° internal chamfer. 45° external chamfer.
ID: 27.1 mm, OD: 38 mm, W: 6.5 mm
Enduro Part Code: ACB6805 SS -
1" ACB 6805 FC Suspension & Headset Bearing (Enduro MAX)
US$16.10In Stock
Application: Niner Suspension Pivots & Trek Speed Concept Lower Headsets
ID: 27.1 mm, OD: 38 mm, W: 6.5 mm Learn More -
6807-2RS FC Headset Bearing (Enduro MAX)
US$14.45In Stock
Application: Headsets
ID: 35 mm, OD: 47 mm, W: 7 mm Learn More -
Application: 1.5" Lower headset bearing race and matching 4545 steel bearing. Replaces both 45 x 45 degree Campy style and 36 x 45 degree "ACB" headset lower races Learn More
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ACB3645 1 1/8" Headset Bearing (Monocrome)
US$13.57In Stock
Application: 1 1/8" Headsets (Cane Creek, Woodman, FSA) & GT I-drive Suspension Pivots
36 x 45 degree ACB
ID: 30.1 mm, OD: 41 mm, W: 6.5 mm Learn More -
ACB3645 1.5" Headset Bearing (Monocrome)
US$20.64In Stock
Application: Lower race of 1.5" straight and tapered headsets
36 x 45 degree ACB
ID: 40 mm, OD: 52 mm, W: 7 mm Learn More -
ACB3645 1.8" Headset Bearing (Monocrome)
US$23.00In Stock
Application: e-bike headsets, including Trek Rail
36 x 45 degree ACB
ID: 50 mm, OD: 61.9 mm, W: 8 mm Learn More -
ACB4545 1 1/4" Headset Bearing for Giant Overdrive 2 (Monocrome)
US$15.93In Stock
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ACB4545 1 1/8" Headset Bearing (Monocrome)
US$13.57In Stock
Application: 1 1/8" 4545 Headsets 45 x 45 degree ACB
41 mm OD, 30.1 mm ID, 6.5 mm W Learn More -
ACB4545 1.5" Headset Bearing (Monocrome)
US$20.64In Stock
Application: 1.5" 4545 Headsets
Learn More
45 x 45 degree ACB
51.9 mm OD, 40mm ID
6.3mm across chamfers -
B542-2RS FC Headset Bearing (Enduro MAX)
US$22.89In Stock
Application: Klein Headsets
ID: 1 5/16" (33.34 mm), OD: 1 3/4" (44.45 mm), W: 9/32" (7.14 mm)
Imperial bearing Learn More -
B543-2RS FC Headset Bearing (Enduro MAX)
US$22.47Last One Left
Application: Cannondale Lefty Headsets
ID: 1 9/16" (39.7 mm), OD: 2" (50.8 mm), W: 9/32"
Imperial bearing Learn More -
Campy 4545 1 1/8" 1RS Headset Bearing (Monocrome)
US$15.93In Stock
Application: 1 1/8" 4545 Headsets
45 x 45 degree ACB
ID: 30.5 mm, OD: 41.8 mm, W: 7.88 mm
Features single rubber seal (1RS), rolled over outer race & recessed inner chamfer
Exact replacement for Campy 4545 1 1/8" bearings Learn More
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- Bearing Material: Chromium Steel Remove This Item
Shopping Options
- Bearing Internal Diameter (ID)
- Bearing Outside Diameter (OD)
- Bearing Chamfer
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