2 PCS 27.5" Heavy Duty Fat Bike Tubes 27.5 x 2.50/3.0 AV32mm Schrader Valve 64/76-584 Inner Tubes 27.5" Bicycle Tubes Compatible with 27.5x2.5 27.5x2.60 27.5x2.80 27.5x3.0 Bike Tire Tubes

2 PCS 27.5" Heavy Duty Fat Bike Tubes 27.5 x 2.50/3.0 AV32mm Schrader Valve 64/76-584 Inner Tubes 27.5" Bicycle Tubes Compatible with 27.5x2.5 27.5x2.60 27.5x2.80 27.5x3.0 Bike Tire Tubes

comments:

Jolly-Equivalent posted on r/radpowerbikes3w

Well, aside from whether they would fit or not, those are Presta valves, and the Radster Trail uses Schrader valves. Presta values are a different diameter and can break off, is what I heard when I asked a bike shop, since that was all they had were Prestas. I've bought these a few times now, and they work fine. https://www.amazon.com/dp/B0952XVPPX?ref=ppx_yo2ov_dt_b_fed_asin_title

2 PCS 27.5" Heavy Duty Fat Bike Tubes 27.5 x 2.50/3.0 AV32mm Schrader Valve 64/76-584 Inner Tubes 27.5" Bicycle Tubes Compatible with 27.5x2.5 27.5x2.60 27.5x2.80 27.5x3.0 Bike Tire Tubes | eaves-shop