The Park Tool SAC-2 Supergrip Assembly Compound 4 oz is a specialized lubrication paste engineered to improve friction where you want it and reduce slip where you don’t. Designed for bicycle assembly and service tasks, this compound helps secure components like seatposts, stems, handlebars, and pedals during installation — especially when a firm grip without excessive torque is needed. Unlike traditional greases that promote smooth movement, Supergrip provides controlled friction so parts stay put without loosening under load.

This assembly compound combines high-tack additives with a stable base that resists washout and holds on through tightening and initial use. It’s ideal for situations where aluminum-to-carbon, carbon-to-carbon, or mixed-material interfaces can slip or rotate if only lubricated, such as carbon seatpost frames or textured alloy surfaces. Applying a thin layer of SAC-2 to contact areas before installation helps prevent creaks, unwanted rotation, and the need for repeated torque adjustments — giving you confidence that assemblies remain solid ride after ride.

Designed for both home mechanics and professional bike shops, this compound simplifies tricky assembly tasks and improves reliability on components prone to slip. Its 4 oz size makes it convenient to keep in your toolbox or service bench, ready for any build or adjustment. With Park Tool’s reputation for precision service products, SAC-2 Supergrip Assembly Compound is a smart addition for riders who value secure, noise-free assemblies.