K-Edge Garmin Race Mount Description: When your bike deserves Pro Tour race quality, at 32 Grams the Race Mount is 33% lighter than the "standard" K-Edge Garmin Mount. Optimized for Garmin 820 and 520 models. Note: Not combo compatible Features: Compatible with Garmin Edge 830, 820, 530, 520, 510, 500, 130, 25, 20 Diameter: 31.8MM Specifications: Weight: 32 g Dimensions: 11 x 20 x 4 cm Color: Black/Silver