Excess Exe ISO Pro 36H Rear Hub

Product Overview The Excess Exe ISO Pro is a 36-hole rear hub engineered for gate-start racing and high-torque applications. The 3-pawl, 5-fin engagement system locks into a 120-ratchet outer ring, delivering crisp power transfer and maximum engagement points for consistent, hard launches. Four sealed bearings and an alloy axle provide durability and low friction for extended riding.

Key Features

• 3-Pawl with 5-Fin Engagement System – Each pawl features 5 fins that engage the 120-ratchet outer ring, multiplying contact points and reducing slippage during acceleration; ideal for gate starts and high-torque pedaling
• 120-Ratchet Cutter Ring – High ratchet count delivers immediate engagement with minimal freewheeling lag; essential for competitive racing where split-second power application matters
• Four Sealed Bearings – Sealed cartridge bearings eliminate water and dirt ingress, reducing maintenance and extending service life; lower friction than loose-ball bearings
• Alloy Axle – Lightweight construction reduces unsprung weight without sacrificing strength; resists corrosion better than steel
• 3/8" Bolts with Alloy CNC Caps – Oversized bolt format ensures secure wheel retention on racing bikes; CNC-machined caps provide clean, professional appearance
• Dual Driver Spacers – Cr-Mo 1mm and 0.5mm spacers tune engagement geometry and accommodate different cog thickness variations
• Alloy Lock Ring – Secure cog retention without stripping; lighter than steel alternatives

Technical Specifications

• Wheel Position: Rear
• Spoke Holes: 36
• Axle Diameter: 10mm
• Bolt Standard: 3/8"
• Engagement System: 3 pawls with 5-fin engagement
• Ratchet Ring: 120-ratchet outer ring
• Bearings: 4 sealed cartridge bearings
• Axle Material: Alloy
• Driver Material: Alloy (3-pawl assembly)
• Driver Spacers: Cr-Mo (1x 1mm, 1x 0.5mm)
• Lock Ring: Alloy
• Weight: 380g (13.4 oz)
• Cog Compatibility: ISO / Shimano-style (Excess, Elevn, Shimano, etc.)
• Cog Included: No—rear cog sold separately

Compatibility and Ideal Use Cases

• Fits: 36-hole rear wheel builds on BMX frames with 3/8" bolt dropouts and ISO-standard rear cog spacing
• Cog Options: Any ISO or Shimano-compatible rear cog (16T, 17T, 18T, etc.); verify tooth count availability
• Best For: Race-focused riders prioritizing gate-start responsiveness and maximum power transfer; competitive BMX racing where engagement lag directly impacts performance
• Ideal Riders: Intermediate to advanced racers; riders performing high-torque launches and acceleration drills
• Wheel Building: Requires rim, spokes, nipples, and rear cog (not included) to complete rear wheel

Note Rear cog is sold separately. Verify ISO/Shimano compatibility with your intended cog before purchase. Hub ships without cog and lock ring pre-installed.