It’s probably the best top cap you will ever have. One piece, bolt+topcap with Allen (hex) 5mm socket. It will fit every standard star nut.

Not suitable for “expanding” star nuts with the steel coil spring (used in carbon steerer). But it is compatible with ENVE Compression Plug (recommended for carbon steerers).

If your top cap sits from an angle on the stem (does not touch the stem with the whole circumference), it means your star nut sits from an angle. You will have to make it straight before mounting the Ab top cap, and you can use an old steel bolt and a hammer to do that.

Specifications

• Size (Mass +/-1g): only 5g
• Color Black, Titanium, Red, Gold, Green
• Key required Allen 5mm
• Material CNC machined 7075
• Dimensions: Treat it like a 25mm hex bolt for measuring purposes.

SKU# TPTI_Std, TPRD_Std, TPGL_Std, TPBK_Std