Sealed Bearings

Inner x Outer x Depth (mm): 30.2 x 42 x 7
Inch Dia: 1-1/8”
Angle / Chamfer (Deg): 1 x 45 Deg Chamfer on Inner Race
Used on: Pinarello Headsets / Acor

FITS MANY PINARELLO ROAD BIKES USING NON-TAPERED 1-1/4" BEARINGS (SEE SEPARATE LISTING FOR STAINLESS VERSION)

Inner x Outer x Depth (mm): 35 x 47 x 7
Inch Dia: 1 - 1 / 4"
Angle / Chamfer: Non
Material: Chromium Steel GCR15 (Race & Balls)

FITS MANY PINARELLO ROAD BIKES USING NON-TAPERED 1-1/4" BEARINGS

• Inner x Outer x Depth (mm): 35 x 47 x 7
• Inch Dia: 1 - 1 / 4"
• Angle / Chamfer: Non
• Material: Stainless Steel SS440C (Race & Balls)

FITS MANY PINARELLO ROAD BIKES USING NON-TAPERED 1-1/2" BEARINGS

Inner x Outer x Depth (mm): 40 x 52 x 7
Inch Dia: 1 - 1 / 2"
Angle / Chamfer: Non
Material: Chromium Steel GCR15 (Race & Balls)

Inner x Outer x Depth (mm): 35 x 47 x 7
Inch Dia: 1 - 1 / 4”
Angle / Chamfer (Deg): 36 / 45
Material: Chrome Steel 100Cr6 (Race & Balls)

IMPORTANT NOTE: We stock ACB3547H7 which has same basic dimensions. This one differs as it has a longer inner chamfer measuring 2.2mm  which fits only ACROS Headsets. See image attached.

Inner x Outer x Depth (mm): 30.05 x 42 x 7
Inch Dia: 1-1/8”
Angle / Chamfer (Deg): 36 / 45
Material: Chromium Steel

Inner x Outer x Depth (mm): 35 x 47 x 7
Inch Dia: 1 - 1 / 4”
Angle / Chamfer (Deg): 36 / 45
Material: Chrome Steel 100Cr6 (Race & Balls)

Note, if your requirement is for an Acros Headset, then please see related products below for AC3547-2.2-R1 which is same product in almost every way, but has a longer (2.2mm) internal chamfer found on the Acros version

USED ON Wilier Bikes - Superslim Bearing!
Inner x Outer x Depth (mm): 39 x 46.9 x 7

NOTE, This direct equivalent to FSA part ref MR261A (160-0181000000) - fits Whyte E-Lyte

Inner x Outer x Depth (mm): 42 x 51.8 x 7
Inch Dia: 1 - 1 / 2”
Angle / Chamfer (Deg): 45 / 45

AI52/Ai52 Upper Headset Bearing, Note the lower bearing is our part ref 'P16'

Inner x Outer x Depth (mm): 42 x 52 x 7
Inch Dia: 1 - 1 / 2”
Angle / Chamfer (Deg): 45 / 45
Note: Same fit as Acros AC4252