Tioga Powerblock S-Spec Tire – 120 TPI – Folding Bead

Product Overview The Tioga Powerblock S-Spec is a lightweight BMX race tire engineered for hard-pack track surfaces. The low-profile directional side lugs deliver excellent cornering grip, while the smooth center tread minimizes rolling resistance for speed. A Cyclex 120 TPI ultralight casing with Kevlar bead keeps weight minimal without compromising durability. Available in multiple widths from 1-1/8" to 2.1".

Key Features

• Textured Center Band with Directional Blocks – Center tread features textured blocks that reduce rolling resistance on smooth hard-pack surfaces while maintaining forward momentum during acceleration
• Lateral Crampons (45° Notched and Textured) – Angled side lugs cut and textured at 45° provide aggressive cornering grip on bermed track sections and hard-packed surfaces without dragging during straightaways
• Textured Sidewalls – Sidewall texture improves grip during angled cornering and provides visual feedback for lean angle control
• Cyclex 120 TPI Ultralight Casing – High thread-per-inch count creates supple, lightweight sidewalls that absorb small track imperfections while maintaining responsiveness; reduces rotational mass compared to lower TPI options
• Soft UTC Rubber Compound – Soft rubber formulation maximizes grip on hard-pack and slick track surfaces; maintains traction in varied track conditions
• Kevlar Bead with Folding Design – Kevlar-reinforced bead resists pinch flats and bead unseating; folding bead enables compact packing and easy tire transport
• Race-Specific Geometry – Low-profile construction minimizes overall tire volume for optimal fit on narrow rims and reduced unsprung weight

Technical Specifications

• Tire Type: BMX Race
• Wheel Position: Rear (primary use)
• Casing: Cyclex 120 TPI ultralight
• Bead Type: Foldable Kevlar
• Rubber Compound: Soft UTC
• Available Sizes:
  • 20x2.1": 330g (11.64 oz)
  • 20x1.95": 305g (10.76 oz)
  • 20x1.75": 285g (10.05 oz)
  • 20x1.60": 240g (8.47 oz) – fits 20x1.5" and 20x1.75" rims
  • 20x1-3/8": 255g (8.99 oz)
  • 20x1-1/8": 179g (6.31 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 width matches tire specification before purchase
• Rim Compatibility Note: 20x1.60" size fits both 20x1.5" and 20x1.75" rims
• Best For: Competitive BMX racers on hard-pack and slick track surfaces; riders prioritizing speed and cornering grip over durability
• Ideal Riders: Intermediate to advanced racers; riders practicing or competing on smooth, well-maintained race tracks
• Inflation: Consult sidewall markings for recommended PSI range; hard-pack track riding typically uses higher pressures (80–110+ PSI depending on track and rider weight)
• Not Recommended For: Off-road, street, or park riding; soft or loose track surfaces; front wheel use

Size Selection Choose tire width based on rim internal width and intended track surface. Narrower sizes (1-1/8", 1-3/8") reduce weight for acceleration; wider sizes (1.75", 1.95", 2.1") increase cornering grip. The 20x1.60" size offers versatility across multiple rim widths.

Durability Note Lightweight casing and soft compound prioritize grip and speed over puncture resistance. Regular inspection for wear and damage recommended during training and racing sessions.

Note: The 20x1.60" tire will fit both a 20x1.5" and 20x1.75" rim.