Profile Single Chainring Spline Drive Spider for Boost Cranks

Description

SPIDER-SPLINE DRIVE (SINGLE CHAINRING)

Designed to provide optimal chainline when using a Profile Euro Outboard bottom bracket.

Places the single chainring over the external bearing cup.

Machined from billet aluminum plate.

Supplied with a CrMo Steel adapter insert already pressed in.

Three styles of single chainring spider available:
-4 Bolt (104MM BCD) for 19mm splined axle
-4 Bolt (104MM BCD) for 22mm splined axle
-5 Bolt (110MM BCD) for 19mm splined axle

Weight:
4-Bolt: 74g/2.6oz
5-Bolt: 83g/2.9oz

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