Excess Pro Alloy Front 3/8" Axle

Product Overview The Excess Pro Alloy Front 3/8" Axle is a replacement axle engineered for Excess Pro 36H front hubs and XLS-2, XLS-3 wheels. The aluminum construction reduces weight while maintaining adequate strength for competitive racing and training. The 10mm BTR (bolt through rotor) screw clamping system enables secure wheel retention on modern disc-brake BMX frames.

Key Features

• Aluminum Construction – Lightweight alloy reduces overall wheel and bike weight; resists corrosion and maintains durability for extended use
• 3/8" Diameter – Standard BMX front axle size compatible with 3/8" bolt dropouts; universal compatibility across BMX frames
• 10mm BTR Compatibility – Engineered for 10mm bolt through rotor screw clamping system; enables secure wheel retention on disc-brake equipped frames
• Pro Hub Specific – Precision-engineered for Excess Pro 36H front hub specifications; ensures proper bearing and hub body alignment
• XLS-2 and XLS-3 Wheel Compatible – Direct compatibility with Excess XLS-2 and XLS-3 wheels (406 and 507 ETRTO) front hub builds across both models
• Direct Replacement – Drop-in compatibility with original Excess Pro front axles; no modification required for installation
• Lightweight Design – Aluminum material contributes to overall weight reduction without sacrificing structural integrity for racing applications
• Sold Individually – Purchase single axle for front wheel or as needed for maintenance

Technical Specifications

• Material: Aluminum
• Diameter: 3/8" (10mm)
• Bolt Standard: 10mm BTR (bolt through rotor) screw clamping
• Hub Compatibility: Excess Pro 36H front hubs
• Wheel Compatibility: Excess XLS-2 and XLS-3 (406 and 507 ETRTO) wheels
• Size: Pro
• Wheel Position: Front
• Manufacturing: Precision-engineered to Excess specifications

Compatibility and Ideal Use Cases

• Fits: Excess Pro 36H front hubs; Excess XLS-2 and XLS-3 wheels (406 and 507 ETRTO)
• Best For: Axle replacement due to bending, cracking, or damage; hub rebuild or reassembly; drivetrain upgrades on 20" race bikes
• Ideal Riders: Competitive 20" racers; riders seeking lightweight construction and reliable front-end handling
• Installation Requirement: Basic mechanical knowledge; requires removal and installation with 10mm BTR bolts; disc rotor installation (if needed)
• Not Recommended For: Other Excess hub models (Mini/Expert, XLS-1); non-10mm bolt standards; non-disc brake frames

Installation Notes Remove front wheel and disassemble axle from hub. Clean axle seat in frame dropouts. Install new axle through frame dropouts and hub body. Thread 10mm BTR bolts hand-tight through both dropouts into axle. If using disc rotor, install rotor onto axle before final tightening. Tighten progressively in alternating sequence (left-right-left-right) to ensure even clamping pressure and proper wheel alignment. Final tightness should be snug but not excessive—over-tightening can strip threads or crack dropouts.

Maintenance Notes Check 10mm bolt tightness regularly before riding, especially after extended riding sessions or impacts. Loose bolts compromise wheel retention and handling precision. Replace axle if threads become stripped, if axle bends, or if bolts loosen repeatedly despite proper tightening. Verify disc rotor alignment after installation if rotor is installed. If axle becomes bent, replacement is recommended over straightening, as bent axles may cause uneven bearing wear.

Performance Note Properly installed and tightened axle ensures consistent wheel alignment and eliminates lateral play that can affect steering precision and front-end handling—critical for competitive 20" racing performance and responsive bike control during gate starts and cornering.

Compatibility Reminder Compatible with Excess Pro 36H front hubs and XLS-2, XLS-3 wheels (406 and 507 ETRTO) only. Verify your hub size (Pro) and wheel specification before purchase—incompatible with Mini/Expert front hubs, XLS-1 wheels, or other Excess front hub variants.