Cane Creek 40 IS Top

Benchmark Industry Reliability. Integrated Precision.

The engineering hallmark of the Cane Creek 40 IS Headset Top Assembly is its Integrated Standard (IS) architecture paired with a Clip-Sealed carbon-friendly compression ring. Designed to drop directly into frames with integrated headtube bearing seats (41.0mm or 42.0mm IS standards), it incorporates a high-friction, low-drag upper lip seal that locks out trail grit, water spray, and sweat. Combined with premium black-oxide zinc-coated cartridge bearings, it ensures slop-free, friction-free steering control season after season.

Why the Cane Creek 40 IS Top Assembly Belongs on Your Bike:

• 6061-T6 Aluminum Construction: Machined from high-strength aluminum alloy to minimize weight while offering exceptional structural support under stem pre-load forces.

• Integrated Standard (IS) Design: Drops directly into headtubes with integrated bearing cups, eliminating the need to press external cups into the frame.

• Low-Friction Dual-Lip Seals: Features an innovative Clip Seal top cover that shields internal bearings from rain, mud, and bike washes without adding noticeable steering drag.

• Carbon-Steerer Friendly Compression Ring: Self-locating alloy compression ring distributes pre-load forces evenly around carbon or alloy steerer tubes without scoring or binding.

• Zinc-Coated Sealed Cartridge Bearings: Black-oxide treated steel bearings resist internal corrosion and pitting, guaranteeing plush, reliable steering articulation over high mileage.

• Interchangeable Cross-Series Parts: Internal specs align across 10, 40, and 110-Series components, allowing for easy bearing upgrades down the road.

Technical Specifications:

• Fitment Standard: Integrated (IS) Upper Assembly

• Steerer Tube Diameter: 28.6mm (1-1/8")

• Common Headtube Diameters: IS41 (41.0mm) or IS42 (42.0mm) options

• Material: 6061-T6 Aluminum Top Cover & Compression Ring

• Bearing Type: Sealed Zinc-Coated Black-Oxide Cartridge (36° x 45°)

• Included Hardware: Star nut, top cap, and stainless steel top cap bolt

• Weight: 40-55g

The Alegro Perspective: When a customer comes in with a creaking, gritty headset, the Cane Creek 40-Series is our instant recommendation. High-end 110-Series headsets are great, but the 40-Series gives you 90% of that performance at a fraction of the cost. The top cover seal on the IS upper is phenomenal at keeping sweat and road spray away from the upper bearing, and the clip-in compression ring makes headset adjustment intuitive and creak-free every time.

Workhorse Sealed Durability. Effortless Steering Precision. Secure Your Cockpit with Cane Creek.