Alienation TCS 138 Tubeless Tire (Black) (Folding)

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Price: $44.99
Discontinued Online
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.

Alienation TCS 138 Tire Description:

The Alienation TCS 138 tire is the first tubeless compatible BMX tire designed specifically for the demands of street & park riding. It features a lightweight 60TPI casing with a dual compound tread that's harder in the center to roll faster and softer on the outer area for more grip when leaned over. Although designed as a tubeless tire, the 138 also works great with traditional rim & tube setups.

The advantages of running tubeless are:
Less weight: A tube might not seem very heavy, but rotating weight that far out on the wheel is noticeable. So no tube along with Alienation's lightweight casing has a significant effect on the feel of the bike.
Less flat tires: With sealant constantly flowing inside the tire, small punctures are quickly sealed. There is also no worry of pinch flats.
Lower tire pressure: Although the 138 is rated at 85 psi max pressure, it's possible to run much lower pressures without any worry of pinch flats. Lower pressure can give you better traction, control and smoother ride by allowing the tire to conform more to the terrain or obstacle.

To run the 138 tire tubeless, it is strongly recommended that you only use it with a TCS compatible rim. Alienation's proprietary TCS (Tubeless Compatible System) bead ensures a perfect fit that can be inflated and seated with a simple hand pump. You'll also need TCS compatible rim tape, valve stem and sealant. 


  • Tire Type: Clincher (Tubeless Compatible)
  • Bead: Folding
  • Compound: Dual
  • TPI (Threads Per Inch): 60 TPI
  • Puncture Protection: No
  • Inflation: 85 PSI
  • Color: Black
  • Weight: 19 oz (540g)

This product was added to our catalog on October 16, 2019

Thomas Schroeder
Verified Owner
Monday, Sep 13 2021 (about 2 years ago)
Alienation TCS 138 Tubeless Tire (Black) (20" / 406 ISO) (2.3")
Mounted, these tires measure exactly 2" wide on a 25mm internal-width rim.