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Hybrid Design
Converts from saddlebag to backpack in under one minute
Simple zipper transformation process
Stow away backpack strapsFit & Compatibility
Universal fit designed for most cruiser bikes
Adjusts to most fender widths
Thick padding under seat designed to keep bags in placeComfort & Protection
Soft foam padding on back panel designed for comfort / to be gentle on bikeStorage & Capacity
SADDLEBAG MODE: 9.2L capacity
BACKPACK MODE: 18.4L capacityStructure & Durability
Sewn-in PVC panels in lids and bags for added structure
Water resistant ballistic nylon constructionSecurity
Locking zipper to prevent unwanted spilling of contents on the road -
The SP-1 is compatible with a wide range of motorcycles, provided there is a rear fender surface and a passenger seat to secure the bag. Ensure adequate clearance from exhausts, blinkers, and suspension.
Harley-Davidson
Softail & Dyna Street Bob
Fits with stock or center-mounted aftermarket taillights.Softail Fat Bob
Compatible, but the OEM upswept exhaust can sit close to the bag. A non-upswept exhaust is recommended for proper clearance.Sportster (and Yamaha Bolt)
Fits, but bikes with side-mounted rear blinkers require a narrower option. (For SP-1 users, this may require relocating blinkers depending on setup.)Softail Low Rider S / ST
Works with stock taillight or center-mounted aftermarket taillight.All Dyna Models
Generally compatible. Contact us if you need fitment confirmation for a specific setup.
Yamaha
Bolt
Same considerations as Sportster fitment—side-mounted blinkers may require repositioning or a narrower setup.
Honda
Rebel / Shadow
Compatible with standard passenger-seat setups.
Indian
Chief
Works when equipped with a passenger seat or step-up seat.Scout / Scout Bobber
Fits when using a step-up seat or passenger seat for securing the bag.
Other Motorcycles
Fits most bikes with:
A rear fender surface for the bag to rest on
A passenger seat that locks down over the bag
Adequate space between blinkers and shocks to accommodate the bag length
General Installation Note
For optimal security, install the SP-1 only on motorcycles with a passenger or step-up seat that can lock the bag in place. The bag is designed to sit directly under the passenger seat.
Questions regarding fitment? Feel free to send us an email at info@throttletwist.com
SP-1™ is a trademark of Throttle Twist MFG.
The SP-1™ design is Patent Pending
Orders are currently available to U.S. residents only. International orders will not be accepted until further notice.