The IRC Siren Pro TLR is the tubeless BMX race tyre developed by Sam Willoughby — designed with input from a former World Champion and Olympic silver medallist. 120 TPI (threads per inch — higher TPI means a more supple, lighter, lower-resistance casing), tubeless-ready, with a centre track optimised for rolling speed and corner knobs designed for traction through berms. Run it tubeless with IRC sealant for a setup that self-seals small punctures and maintains pressure through a moto.
Specifications
- Type: Tubeless Ready (TLR)
- TPI: 120
- Bead: Folding
- Sizes: 20x1.75, 20x1.90
- Design: Sam Willoughby collaboration
