Serfas BMP-SP Saddle Steel Black Medium Sunshine_Enriched Equipped with a centerlock mount

Equipped with a centerlock mount for corresponding hubs

PLUG second output to SPOT tracker or GPS as well as charging a USB cache battery as same time

UCP spokes

The brake pads have cooling fins

For use with Alfine Di2

Serfas BMP-SP Saddle Steel Black Medium Sunshine_Enriched Equipped with a centerlock mount90 Day Comfort Guarantee We understand finding the perfect saddle can be tough, which is why every Serfas saddle sold is backed by our 90 Day Comfort and Satisfaction Guarantee Limited Lifetime Warranty Serfas stand behind their products and are committed to providing the high quality all of their customers deserve which is why Serfas warrants to the original purchaser of a saddle that the product is free from defects in materials and workmanship for