Bontrager Headset Expander Plug and Top Cap

Peace of mind for your carbon fibre steer tube.<br /> - Approved for use on all Trek carbon fibre 1-1/8" steer tubes<br /> - Always install one spacer above the stem on carbon fibre steer tubes Always install one spacer above the stem on carbon fiber steer tubes<br /> - Do not use on aluminium steer tubes in place of a traditional star nut Do not use on aluminum steer tubes in place of a traditional star nut<br /> - Torque inner expander bolt to 9-10Nm<br /> - Torque top cap bolt to 4Nm