Acros IS41/28.6 Upper Cup
Headset

Specifications
- Manufacturer
- Acros
- Name
- IS41/28.6 Upper Cup
- Type
- Integrated (IS)
- Position
- Upper Cup Only
- Bearing Material
- Stainless Steel
- Upper S.H.I.S
- IS41/28.6
Compatibility
Acros IS41/28.6 Upper Cup is a Acros headset. Everything listed below was matched on a specification we hold for both parts: the interface each pairing actually depends on, such as freehub body, speed count, actuation or mounting standard. Where we could not verify that interface, the part is left out rather than assumed to fit.
Forks this headset fits20
Mechanically compatibleLightCarbon
29er Full Carbon Rigid Mtb Plus Fork
- The upper cup seals a matching steerer
Mechanically compatibleLightCarbon
700C Disc Brake CX Fork Gravel Carbon Fork
- The upper cup seals a matching steerer
Mechanically compatibleLightCarbon
700C Disc Brake Gravel Carbon Fork Aero Gravel Bike Fork
- The upper cup seals a matching steerer
Mechanically compatibleLightCarbon
700C Disc Brake Gravel Carbon Fork Racing Gravel Fork
- The upper cup seals a matching steerer
Mechanically compatibleDeda Elementi
Allroad Fork
- The upper cup seals a matching steerer
Mechanically compatibleFormula
Belva
- The upper cup seals a matching steerer
Mechanically compatibleMarzocchi
Bomber 58
- The upper cup seals a matching steerer
Mechanically compatibleMarzocchi
Bomber DJ
- The upper cup seals a matching steerer
Mechanically compatibleMarzocchi
Bomber Z
- The upper cup seals a matching steerer
Mechanically compatibleMarzocchi
Bomber Z1
- The upper cup seals a matching steerer
Mechanically compatibleMarzocchi
Bomber Z1 Coil
- The upper cup seals a matching steerer
Mechanically compatibleMarzocchi
Bomber Z1 E-Optimized
- The upper cup seals a matching steerer
Mechanically compatibleMarzocchi
Bomber Z2
- The upper cup seals a matching steerer
Mechanically compatibleMarzocchi
Bomber Z2 E-Optimized
- The upper cup seals a matching steerer
Speeder
Carbon Gravel Fork
- The upper cup seals a matching steerer
Mechanically compatibleSalsa
Cutthroat Carbon Fork
- The upper cup seals a matching steerer
Mechanically compatibleColumbus
Fast Gravel
- The upper cup seals a matching steerer
Mechanically compatibleSalsa
Firestarter Carbon Fork
- The upper cup seals a matching steerer
Mechanically compatibleColumbus
Futura Allroad Trefoil
- The upper cup seals a matching steerer
Mechanically compatibleColumbus
Futura Cross Plus
- The upper cup seals a matching steerer
Frames with a matching head tube20
Shares a standardSanta Cruz
5010 Frame 2024
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
5010 Frame 2025
- The upper cup is a IS41 fit
Shares a standardYeti
ARC Frame 2026
- The upper cup is a IS41 fit
Shares a standardYeti
ASR Frame 2026
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
Blur Frame 2025
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
Bronson Frame 2024
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
Bronson Frame C 2026
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
Bronson Frame CC 2025
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
Chameleon Frame 2023
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
Chameleon Frame 2024
- The upper cup is a IS41 fit
Shares a standardIbis
DV9 V1
- The upper cup is a IS41 fit
Shares a standardIbis
DV9 V2
- The upper cup is a IS41 fit
Shares a standardIbis
Exie USA V1
- The upper cup is a IS41 fit
Shares a standardIbis
Exie USA V1.2
- The upper cup is a IS41 fit
Shares a standardIbis
Exie V1
- The upper cup is a IS41 fit
Shares a standardIbis
Hakka MX 1 V1
- The upper cup is a IS41 fit
Shares a standardIbis
Hakka MX V1
- The upper cup is a IS41 fit
Shares a standardIbis
Hakkalügi Disc V2
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
Highball Frame 2024
- The upper cup is a IS41 fit
Shares a standardSanta Cruz
Highball Frame 2025
- The upper cup is a IS41 fit
Frequently Asked Questions
What fits Acros IS41/28.6 Upper Cup?
On this page we list forks this headset fits, frames with a matching head tube. Each listing was matched on a specification we hold for both parts; anything we could not verify is omitted rather than assumed to fit.