Serfas' Speed Bag has such a sleek design you won't even notice it's there

and dialed 5° upsweep

for extra safety and peace of mind

good all round traction on pavement and light gravel

Max Fan Speed: 30 mph/48 kph

Sram PC-870 8-Speed Chain Silver pickuponly Serfas' Speed Bag has suchExtremely strong. Incredibly precise. SRAM's PowerChain II increases front and load shifting performance without sacrificing rear shifting precision. The Step2 riveting process increases the Push Pin Power for increased strength and durability. An equally smooth operator on city bike paths and country trails PowerLink "no weak link" technology lets you insert, press, and lock to join links. No tools needed