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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5
These stacks are the key to unlocking your bike's power
© 2025 Factory SuperBike
4 kg compared to stock
Multiple snap button system to integrate the Alpinestars Nucleon back protector
ALPINESTARS Sherpa Jacket - Black/Gray/Yellow - 2XL 4208123-9151-2X SamcoSport These stacks are the keySherpa Jacket Black Gray Yellow 2XL Back compartment can accommodate a Nucleon back protector, available as an optional upgrade, Long side zip closure makes it easy to put on the jacket, Wide, diagonal side pockets on front and roomy kangaroo pocket for real world practicality and secure storage of items, Brushed back fabric for a casual aesthetic and a soft touch luxe feel, Light weight, 3 layer softshell construction for enhanced fit and premium