Tubeless road, gravel and mountain bike riders on 30 to 50 mm deep rims who want quicker inflation and fewer clogged valves.
The Tru-Tension FILLFAST is a tubeless valve built around a high-flow head that Tru-Tension says moves 3.75 times the air of a standard Presta valve. More air, faster, makes seating a stubborn tubeless tyre with a floor pump a lot less of a wrestle.
Its Anti-Clog design is aimed at the classic tubeless headache, sealant drying in the valve and blocking it. The valve is machined from 7075 aluminium and the head is removable, so it can also be fitted to existing Presta tubeless stems and to Presta tubes with removable cores.
This is the 80 mm length in Oil Slick, sold as a pair. Tru-Tension recommends 80 mm for rim depths of 30 to 50 mm.
High flow
Claimed 3.75x the airflow of a standard Presta valve.
Anti-Clog
Designed to resist sealant build-up.
7075 aluminium
Light and strong.
80 mm length
For rims 30 to 50 mm deep.
Pair
Enough for both wheels.
Valve
In the box
High-flow head
Tru-Tension claims 3.75 times the airflow of a standard Presta valve, which helps seat tubeless tyres with a floor pump.
Anti-Clog
Designed to stop sealant building up in the valve and blocking inflation.
Great for
Maybe not for
Tru-Tension's guide: 44 mm for rims under 20 mm deep, 60 mm for 20 to 30 mm, 80 mm for 30 to 50 mm. Fits Presta-drilled tubeless rims.
Fitting tip
Clean the rim bed, push the valve through, and tighten the lock nut by hand only. Over-tightening can crush the rubber base and cause slow leaks. Add sealant through the valve once the head is off, then refit the head and inflate.
