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The headset workhorse: the IS52/40 40-series lower from Cane Creek
The 40-Series sets the standard for performance, durability and value. Drawing from the Premium 110-Series design, the 40-Series incorporates all the features necessary for a durable, lightweight, long-lasting headset.
For 1.5" lower head tubes in combination with 1.5" forks.
Lower Bearing: 1.5"
Steerer Tube: 1.5"
Construction: integrated (IS)
Application: MTB, Road
Bearings: steel cartridge
Lower Outer Ring Diameter:: 52 mm
Standardized Headset Identification System (S.H.I.S.):
The Standardized Headset Identification System (S.H.I.S.) creates a common language for describing modern bicycle headsets. The system provides comprehensive and scalable headset fitment information in a standardized format; making it easy to communicate headset requirements based on frame and fork interfaces.
The system addresses the critical interface dimensions required to fit a fork to a frame, as well as bearing location/cup type. To determine fit, four dimensions are needed: (1) stem-clamp diameter of fork, (2) crown-race seat diameter of fork, (3) head-tube top inside diameter, and (4) head-tube bottom inside diameter. Bearing location and cup-type are identified as (a) external cup (EC), (b) semi-integrated or ZeroStack (ZS), or (c) integrated (IS).
EC: Bearings contained within cups that are located outside of the frame (External Cup).
ZS: Bearings contained within pressed-in cups where the cup and bearings rest inside the frame (ZeroStack).
IS: Bearings that fit directly into a bonded or machined interface that is integrated into the frame (Integrated)
tpi threads per inch
- Construction: Integrated (IS)
- Use: lower
- Crown Race: 40 mm
- Head Tube (Inner Frame Diameter): 52 mm
- Installation Height: 1 mm
Manufacturer Part Number:
- 1 x Cane Creek lower, steel bearings
- 1 x Cane Creek crown race
- black/IS52/40: 50 g