Cast has established a technical partnership with Pirelli, utilising their motorsport-derived rubber expertise, along with access to Pirelli’s state-of-the-art labs, testing facilities and rubber technology.
Cast Antagonist
Designed for cornering confidence and predictability, Antagonist provides consistent support through lean angles. Tightly stacked knobs with exposed lateral edges ensure a positive braking bite. With a large footprint for exceptional grip and braking, the Antagonist is highly confidence-inspiring and aggressive, while balancing generous rolling speed in dry and mixed conditions.
- Sizes: 29×2.4″ & 27.5×2.4″
- Carcass: DualWall Enduro/DH (2-ply 120 tpi, TLR)
- Weights: 29×2.4″ – 1.300 g; 27.5×2.4″ – 1.250 g
- Ideal Conditions: Dry/mixed terrain
Cast Protagonist
Designed for maximum grip and cornering confidence. Our V-design tread pattern encourages smooth directional changes through a varying level of cornering support. This unique characteristic of the Protagonist creates an informative feeling of grip levels as you transfer through lean angles, promoting feel and confidence while finding the limits. Generous knob spacing improves dirt penetration, while clearing mud.
- Size: 29×2.4″
- Carcass Options:
- DualWall Enduro/DH (2-ply 120 tpi, TLR) – 1.310 g
- HardWall Enduro (1-ply 60 tpi + bead-to-bead insert, TLR) – 1.190 g
- Ideal Conditions: Variable terrain
It all comes down to rubber quality. Pirelli gives Cast access to world-class rubber technology & test facilities in Milan. There’s a lot of knowledge shared across their disciplines and we are confident that those motorsport learnings will bring something new to the MTB world.
Thomas Callaghan, Cast Design Lead
With this project, and its dedicated range of tires, we embraced the ambitions of Cast team to support the MTB community from the inside. This is a valuable proposition that goes along with our attention to performance, which aligns with us, so the bond came pretty natural.
Samuele Bressan, Pirelli Global Marketing Manager, Cycling Division
Both Antagonist and Protagonist tires will be available globally from August 2025 through Cast’s online stores, selected dealers and distributors.
About Cast
Cast is an independent brand founded by an international team of passionate riders, engineers, and designers. Together with elite athletes, Cast develops high-performance bike components that cater to all gravity biking disciplines, striving to build a more inclusive and connected MTB culture.
Official website: castmtb.com
Media: instagram