Box One 120 TPI Folding Bead Tire

Product Overview

Box One 120 TPI Folding Tires are high-performance BMX race tires engineered for minimal weight, low rolling resistance, and maximum traction. Built on a super-supple 120 threads-per-inch casing with aramid folding bead and skinwall construction, these tires feature race-specific tread with a large center contact patch for straight-line speed and directional side knobs for cornering grip. Advanced compound mixtures with high silica content reduce weight while maintaining durability.

Key Features

• 120 TPI high-density casing – Super-supple, tightly woven nylon casing with maximum rubber content provides responsive ride feel, low rolling resistance, and puncture protection without excessive weight
• Aramid folding bead – Lightweight Kevlar-based bead folds for compact storage and shipping while maintaining secure rim retention; lighter than wire bead alternatives
• Skinwall construction – Exposed sidewall fabric (no additional rubber layer) reduces rotating weight and drag while maintaining casing integrity
• Race-specific tread pattern – Center strip with large contact patch and low-resistance chevrons for straight-line speed; ramped hexagonal side knobs provide cornering traction
• Directional starting gate grooves – High-traction directional pattern at contact point digs into gate surface for explosive starts without wheel slip
• Advanced compound mixture – High silica content in tread reduces weight while maintaining grip; different compounds in apex, sidewall, bead seat, and center optimize performance in each zone
• Ramped knob design – Countless hexagonal side knobs with directional ramps roll smoothly when upright but bite aggressively when leaned in corners

Technical Specifications

• Casing: 120 TPI (threads per inch) high-density nylon
• Bead type: Aramid (Kevlar) folding
• Sidewall: Skinwall (exposed casing)
• Tread pattern: BMX race-specific directional with center chevrons and hexagonal side knobs
• Compound: Multi-compound with high silica content
• Weight: Varies by size (typically 200-350g depending on width and diameter)
• Sizes available: Standard BMX race sizes (verify specific size options: 20" × 1.5", 20" × 1.75", 20" × 1.95", etc.)
• Recommended use: BMX racing, gate starts, cornering traction

Technical Specifications (continued)

Compatibility and Ideal Use Cases

These tires fit standard BMX race rims in corresponding sizes—verify tire width and diameter match your rim specifications. The folding bead design fits the same rims as wire bead tires but offers easier installation and lighter weight. Best suited for competitive BMX racing where weight savings, rolling speed, and cornering grip are critical. The directional tread pattern must be installed with correct rotation (check sidewall arrow)—improper installation reduces gate traction and cornering performance. The skinwall construction and high TPI casing provide excellent ride quality but are more susceptible to sidewall cuts than reinforced or dual-ply tires—not ideal for street riding, rough trails, or areas with sharp debris. Optimal tire pressure varies by rider weight and track conditions: run higher pressure (60-80+ PSI) on hard-packed tracks for speed; lower pressure (50-65 PSI) on loose or technical tracks for added grip. The aramid bead requires proper seating during installation—use a floor pump or compressor to ensure bead pops into place evenly on both sides.