
In fact, this jacket flies far further under the radar than one might expect from the storied Italian brand, making it a smart pick for urban riders with performance and safety values that don't stop at the city limits.
Constructed from 1.1mm premium soft cow leather for the a great blend of comfort and abrasion resistance, the SP-55 has substantial (but well integrated) Bio-Armor on the shoulders for impact protection and GP-R protectors on the elbows.
Super strong stretch panels under the arms and on the insides of the sleeves ensure high levels of movement and a comfortable fit.
Zippered vents at the shoulders help pull in fresh air, as do large perforated leather panels.
Rarely does this sort of performance pair so well with design details like a zip-out tartan thermal/windbreaker liner, but the SP-55 pulls it off beautifully. This jacket will serve as a faithful 3-season companion, from city streets to fast country twisties. Throw in a rain jacket (we highly recommend the Hurricane series, also by Alpinestars.)
Tech specs from the manufacturer:
Features:
- High Resistant Stretch Fiber (HRSF) panels on armpit and sleeve to further improve fit and feel
- Snap buttons waist and cuff adjustment for an improved riding fit
- Two zippered hand pockets
- Embossed logos on front, back and shoulders
Construction:
- Premium leather main chassis constructed from soft 1.1mm bovine leather for enhanced rider comfort
- Large perforated leather panels for maximum breathability
- Low profile collar construction with padded edging for high levels of rider comfort
- Pre-curved sleeve construction for reduced fatigue when riding
- Removable windbreaker liner allows the jacket to be adapted to the weather conditions
- Chest and back compartments can accommodate the Alpinestars Nucleon chest and back inserts, available as accessory upgrade
- Zipper waist connection allows attachment to Alpinestars riding pants
Protection:
- CE Category II PPE Regulation (EU) 2016/425 – AA class
- CE Level 1 EN1621-1:2012 Alpinestars Bio-Armor shoulder and GP-R elbow protectors
- Alpinestars Bio-Armor protection on shoulders and GP-R protection on elbows for high levels of impact protection
*The jacket is built to take the Alpinestars Nucleon KR-CELLi CE Level 1 or Nucleon KR-2i CE Level 2, but we’ve found it accommodates the Large D3O CE Level 1 Viper back protector quite well.
In fact, this jacket flies far further under the radar than one might expect from the storied Italian brand, making it a smart pick for urban riders with performance and safety values that don't stop at the city limits.
Constructed from 1.1mm premium soft cow leather for the a great blend of comfort and abrasion resistance, the SP-55 has substantial (but well integrated) Bio-Armor on the shoulders for impact protection and GP-R protectors on the elbows.
Super strong stretch panels under the arms and on the insides of the sleeves ensure high levels of movement and a comfortable fit.
Zippered vents at the shoulders help pull in fresh air, as do large perforated leather panels.
Rarely does this sort of performance pair so well with design details like a zip-out tartan thermal/windbreaker liner, but the SP-55 pulls it off beautifully. This jacket will serve as a faithful 3-season companion, from city streets to fast country twisties. Throw in a rain jacket (we highly recommend the Hurricane series, also by Alpinestars.)
Tech specs from the manufacturer:
Features:
- High Resistant Stretch Fiber (HRSF) panels on armpit and sleeve to further improve fit and feel
- Snap buttons waist and cuff adjustment for an improved riding fit
- Two zippered hand pockets
- Embossed logos on front, back and shoulders
Construction:
- Premium leather main chassis constructed from soft 1.1mm bovine leather for enhanced rider comfort
- Large perforated leather panels for maximum breathability
- Low profile collar construction with padded edging for high levels of rider comfort
- Pre-curved sleeve construction for reduced fatigue when riding
- Removable windbreaker liner allows the jacket to be adapted to the weather conditions
- Chest and back compartments can accommodate the Alpinestars Nucleon chest and back inserts, available as accessory upgrade
- Zipper waist connection allows attachment to Alpinestars riding pants
Protection:
- CE Category II PPE Regulation (EU) 2016/425 – AA class
- CE Level 1 EN1621-1:2012 Alpinestars Bio-Armor shoulder and GP-R elbow protectors
- Alpinestars Bio-Armor protection on shoulders and GP-R protection on elbows for high levels of impact protection
*The jacket is built to take the Alpinestars Nucleon KR-CELLi CE Level 1 or Nucleon KR-2i CE Level 2, but we’ve found it accommodates the Large D3O CE Level 1 Viper back protector quite well.


