Lupine Heatsink Piko/Piko R (heatsink). With the optionally available heatsink, we kept the performance of the Piko at maximum level for a longer time, even with little cooling by driving. Ideal for jogging or trail running but of course also when biking. Suitable for current models: 15W Piko 1500 lumens (with and without Bluetooth). Box contents: 1 heatsink including accessories for installation