Tioga Fastr React S-Spec Tire – 120 TPI – Folding Bead

Product Overview The Tioga Fastr React S-Spec is a lightweight BMX race tire engineered for hard gate starts and sustained cornering grip. Serrated-edge knobby tread provides aggressive acceleration traction, while a smooth centerline minimizes rolling resistance throughout the race. Pressure-sensitive side tread activates on corner entry to maximize lateral grip without sacrificing straight-line speed. The 120 TPI Cyclex ultralight casing with folding bead delivers weight savings critical for competitive racing.

Key Features

• Serrated-Edge Knobbies – Saw-tooth style tread blocks on shoulder and acceleration zones maximize bite during hard gate starts and power application; aggressive edge design cuts into track surface for immediate grip
• Smooth Centerline Tread – Ultra-low rolling resistance on center band; maintains speed during straightaways and transitions without dragging
• Pressure-Sensitive Side Tread – Advanced tread formula and geometry activate additional traction when tire flexes under cornering loads; delivers grip precisely when needed without increasing weight or rolling resistance
• Cyclex 120 TPI Ultralight Casing – High thread-per-inch count creates supple sidewalls that absorb track imperfections while remaining responsive; reduces rotational mass for faster acceleration
• Folding Bead Construction – Kevlar-reinforced folding bead saves weight compared to wire beads while resisting pinch flats and bead unseating; enables compact transport
• Low-Profile Geometry – Minimized tire height and volume reduce unsprung weight without compromising contact patch or grip
• Race-Optimized Design – Engineered specifically for competitive BMX racing with emphasis on gate-start performance and sustained corner speed

Technical Specifications

• Tire Type: BMX Race
• Wheel Position: Rear (primary use)
• Casing: Cyclex 120 TPI ultralight
• Bead Type: Folding (Kevlar-reinforced)
• Tread Design: Serrated knobbies with pressure-sensitive side tread and smooth centerline
• Available Sizes:
  • 20x1.75": 300g (10.58 oz)
  • 20x1.60": 280g (9.88 oz)
• TPI: 120
• Surface Type: Hard-pack race track
• Front Use: Not recommended (rear-specific design)

Compatibility and Ideal Use Cases

• Fits: 20" BMX race wheels with rim widths compatible with selected tire size; verify rim internal width matches tire specification before purchase
• Best For: Competitive BMX racers prioritizing gate-start power and corner grip on hard-pack tracks; riders seeking lightweight performance without sacrificing acceleration traction
• Ideal Riders: Intermediate to advanced 20" racers; riders competing in gate-start racing disciplines where launch traction is critical
• Wheel Position: Rear wheel primary use; front mounting not recommended due to rear-specific tread optimization
• Inflation: Follow sidewall PSI recommendations; hard-pack racing typically uses 80–110+ PSI depending on track condition and rider weight
• Not Recommended For: Off-road, street, or park riding; soft or loose track surfaces; front wheel use; riders prioritizing cornering-only performance over acceleration grip

Size Selection Available in two widths: 20x1.75" for maximum grip and stability, or 20x1.60" for reduced weight and faster acceleration. Choice depends on track surface, rider preference, and rim width compatibility.

Performance Notes The serrated-knob design provides immediate traction during gate acceleration; pressure-sensitive sidewalls engage progressively as lean angle increases, delivering smooth grip progression through corners. This tire excels on hard, consistent track surfaces where edge-cut traction matters most.

Durability Note 120 TPI folding-bead construction prioritizes grip and speed over puncture resistance. Regular inspection for wear during racing and training sessions recommended.

Weight:
20 x 1.75: 300g; 10.58 Oz
20 x 1.60: 280g; 9.88 Oz