The Rennen Ultralite Spider is the lightest 5 bolt Crank spider available.

Specs:

Lightest at 32grams 5 bolt 110mm BCD

Extraction feature of the spider just like what is available on our popular RayceLite gears. Don’t ruin your expensive cranks, thread in the 6mm cone point extraction screws and safely remove your spider from the cranks.

Compatible with most square taper crank systems that use a (5/8″) 0.625inch square mounting boss.