Serpent 802170 19T Mid-Center Alloy Pulley with Shim  [SER802170]

Lightweight upgrade for vintage 720-09 with Serpent 802170

The Serpent 802170 19T Mid-Center Aluminum Pulley and Shim is a targeted upgrade for hobbyists restoring or running the Serpent 720-09 200mm GP. Machined from light aluminum, the pulley delivers a precise fit and added toughness while keeping rotating mass low. The anodized coating improves surface resistance to wear and helps keep grit and track debris from accelerating belt wear.

Advantages of an anodized surface

Anodizing strengthens the component's oxide layer so the metal resists scuffs and corrosion better than raw aluminum. For racers and club drivers that means fewer checks and repairs between sessions. The treated surface also makes it harder for sand, grass and grime to cling, promoting smoother belt tracking and longer service life.

Ideal match for the Serpent Vintage lineup

This pulley and shim pair slip into the original geometry of the 720-09, bringing modern materials to a classic chassis. It is a straightforward way to improve reliability while keeping the vintage handling characteristics that owners value.