Beat the cold and extend your riding season with the FIRSTGEAR Gen4 Heated Jacket Liner in Small. The latest generation of FIRSTGEAR's flagship heated layer technology, this liner delivers rapid, even warmth across your core, back, and chest — the critical zones for maintaining body temperature during cold-weather riding. Slim enough to wear comfortably under your riding jacket, the Gen4 liner connects to your motorcycle's 12V electrical system for consistent, reliable heat on demand.
- FIRSTGEAR Gen4 heated jacket liner — the latest generation heated riding layer
- Heats core, chest, and back for maximum cold-weather riding comfort
- 12V motorcycle-powered for consistent, reliable heat output on any ride
- Slim profile fits easily under virtually any riding jacket
- Compatible with FIRSTGEAR Single and Dual Remote Heat-Troller controllers
- Small sizing for a precise, form-fitting, efficient heat transfer fit