May Giveaway: Win Cast Tyres, Seats and Grips!

Shop at 20Twenty this month (May 2026) and we'll put your name into a draw to win Cast stuff!

First prize is a pair of Cast tyres, second is a Cast saddle and third prize is a set of Cast Grips! 

Cast is a fairly new brand, but they have some big names on board, not just as sponsored riders - as brand owners.


Cast Mountain Bike Tyres

Tyres are made in conjunction with Pirelli and saddles are made in partnership with SDG.

There are two tread patterns in the Cast tyre range, Protagonist and Antagonist. Both use a soft SmartEVO DH compound for plenty of grip. Mike's running these on the Yeti LTe he's racing this year, and he loves them!

Cast Protagonist Mountain Bike Tyre

Protagonist:

  • More open tread pattern for mud clearance.
  • 29x2.40 only
  • Two carcasses (dual wall for maximum sidewall protection, hard wall for less weight)
Cast Antagonist Mountain Bike Tyre

Antagonist:

  • Tighter, faster rolling tread pattern with lots of edges for braking.
  • Dual wall carcass only (most sidewall strength),
  • 29x2.40 or 27.5x2.40


Cast Saddles: SDG Bel Air V3 saddles with Kriss Kyle or Greg Minaar graphics, or the Danny MacAskil SDG Bel Air V3 Max eMTB saddle with more padding and support for steep climbing.

Cast Grips: Choice of really grippy grips, including the new Yum Yum grips (yes, that's what they're named after!)

All you need to do to be in with a chance of winning is shop with us. We'll contact the winner by email, so if you shop in out Banchory store, we'll ask for your email address at the point of purchase.

T's and C's: No cash alternative, winner will be contacted by email. If you are shopping in store, you will need to provide an email address when you make a purchase. Every purchase counts as a prize draw entry.