Excess Pro Cromo Rear 3/8" Axle For P3x1 R24 Hub

Excess Pro Cromo Rear 3/8" Axle For P3x1 R24 Hub

Product Overview The Excess Pro Cromo Rear 3/8" Axle is a replacement axle engineered for Excess Pro 36H P3x1 R24 rear hubs and XLS-1 wheels. The chromoly construction provides superior strength and durability for competitive racing and intensive training. The 10mm BTR (bolt through rotor) screw clamping system enables secure wheel retention on modern disc-brake BMX frames.

Key Features

• Chromoly Construction – Cr-Mo material resists bending and cracking; provides strength and durability superior to aluminum for high-load racing applications
• 3/8" Diameter – Standard BMX rear 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
• P3x1 R24 Specific – Precision-engineered for Excess Pro 36H P3x1 R24 rear hub specifications; ensures proper bearing and hub body alignment
• XLS-1 Wheel Compatible – Direct compatibility with Excess XLS-1 wheels (406 and 507 ETRTO) rear hub builds
• Direct Replacement – Drop-in compatibility with original Excess Pro axles; no modification required for installation
• High-Strength Design – Chromoly material maintains straightness under racing loads and impacts; resists deformation better than aluminum alternatives
• Sold Individually – Purchase single axle for rear wheel or as needed for maintenance

Technical Specifications

• Material: Chromoly (Cr-Mo)
• Diameter: 3/8" (10mm)
• Bolt Standard: 10mm BTR (bolt through rotor) screw clamping
• Hub Compatibility: Excess Pro 36H P3x1 R24 rear hubs only
• Wheel Compatibility: Excess XLS-1 (406 and 507 ETRTO) wheels
• Size: Pro
• Manufacturing: Precision-engineered to Excess specifications

Compatibility and Ideal Use Cases

• Fits: Excess Pro 36H P3x1 R24 rear hubs; Excess XLS-1 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 prioritizing P3x1 R24 reliability and seeking durable, high-strength axle construction
• 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, Pro Alloy P3x5 R120); non-10mm bolt standards; non-disc brake frames

Installation Notes Remove rear 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 or if bolts loosen repeatedly despite proper tightening. Verify disc rotor alignment after installation if rotor is installed. Chromoly axles maintain straightness better than aluminum; replacement recommended if axle bends rather than attempting straightening.

Performance Note Properly installed and tightened chromoly axle ensures consistent wheel alignment and eliminates lateral play that can affect steering precision and overall bike control—critical for competitive 20" racing performance. Chromoly strength maintains reliable hub function under high-load gate starts and aggressive racing conditions.

Compatibility Reminder Compatible with Excess Pro 36H P3x1 R24 rear hubs and XLS-1 wheels (406 and 507 ETRTO) only. Verify your hub model (P3x1 R24) and wheel specification before purchase—incompatible with Mini/Expert, Pro Alloy P3x5 R120, or other Excess rear hub variants