4130 aircraft grade seamless cromoly tubing.

Ideal for tandem boom/bottom tubes in the perfect dimension for attaching to 68mm wide BSA English and 66mm wide Eccentric bottom bracket shells or any other use including cargo bikes, heavy-duty mountain bikes.

Light, strong and extra stiff.

US made and ovalized in house.

Custom lengths/sizes available.

• LENGTH: 762mm (30in)

• MATERIAL: 1.750 x .035 seamless 4130 steel

• DIMENSION: oval is approx. 52mm width x 36mm height

• WEIGHT: 737g at full length