Profile AC-2 BMX Rear Hub 36H – Matt Black | Dual Angular Contact Cassette Hub

The Profile AC-2 BMX Rear Hub represents the next evolution of BMX cassette hub technology.
“AC-2” stands for Dual Angular Contact, combining advanced angular contact bearings with precision-machined angled hub bores to deliver smoother rolling speed, superior durability, and industry-leading ease of maintenance.

Designed and manufactured in the USA, the AC-2 hub introduces revolutionary bearing installation and performance never before seen in a BMX hub.

Key Features

Advanced Dual Angular Contact Bearing System

• Oversized 20mm angular contact bearings with wave spring preload
• Bearings sit in tapered cups matched to angled hub shell bores
• Perfect bearing alignment reduces friction and premature wear
• Bearings install and remove without presses or special tools

Unlike traditional hubs, tightening axle bolts does not affect bearing load. The hub shell and driver float on the axle, ensuring consistent performance and longer bearing life.

Simple One Tool Maintenance Design

• Bearings, wave spring, and shims secured by a single retaining ring
• Serviceable using only snap ring pliers
• Optional Profile Racing installation tool available

The AC-2 hub is built from the ground up for riders and mechanics who value simple servicing and maximum reliability.

Adjustable Points of Engagement (POE)

Customize engagement feel and drag to suit your riding style:

• 6 Pawls Installed → 96 Points of Engagement (maximum responsiveness)
• 3 Pawls Installed → 48 Points of Engagement (reduced drag & smoother roll)

Each setup delivers a distinct engagement feel and sound.

Profile Racing Cassette System

• Proprietary 10-spline aluminium cassette body
• Compatible with Profile steel, Elite, or aluminium cogs
• Cog sizes: 12T–18T

Premium Construction

• Aerospace-grade billet aluminium hub shell
• True 20mm bolt-on hollow aluminium axle
• Compatible with chromoly, aluminium, and carbon BMX frames
• Standard 110mm BMX rear hub spacing
• RHD configuration

Build Your Own Hub (BYOH Options)

Customize your AC-2 hub:

Spoke Hole Options

• 28H or 36H

Hub Colours

• Black, Silver, Red, Blue, Gold, Purple, Green, Matte Black

Cog Options

• Steel: 12T–18T
• Elite: 16T–18T
• Aluminium: 13T–18T

Axle Bolt Options

• 10mm Socket Head with Volcano Washers (Steel or Titanium)
• 10mm Button Head (Steel or Titanium)
• 15mm Aluminium
• 20mm Aluminium

Bearing Options

• Steel 20mm Angular Contact Bearings
• Ceramic Hybrid Angular Contact Bearings (Upgrade)

Specifications

• Hub Type: BMX Cassette Rear Hub
• Spacing: 110mm BMX Standard
• Drive Side: RHD Only
• Axle: 20mm Hollow Aluminium
• Weight: 325g / 11.45oz (with 15mm bolts, no cog)
• Made in the USA

Front and rear hubs sold separately.

Why Choose the Profile AC-2 BMX Hub?

The Profile AC-2 delivers:
✔ Fast and reliable engagement
✔ Reduced bearing wear
✔ Easier and more affordable servicing
✔ Customisable ride feel
✔ USA-made precision engineering

Built for BMX racers and riders demanding the highest performance from their drivetrain.