Motorcycle Rear Seat Bag for BMW S1000RR HP4 2009-2018 – Locking PU Leather Cushion

Add convenient storage to your BMW S1000RR, Double R, or HP4 without altering the bike's profile. This rear seat bag replaces the standard passenger cushion and locks securely in place, giving you a weather-resistant compartment for keys, a phone, or small tools. Made from sponge-filled PU leather over an ABS base plate, it offers basic waterproofing, wear resistance, and shock absorption for everyday riding. Designed for model years 2009 to 2018, it is a direct-fit aftermarket solution – not a genuine BMW accessory, but built to the same dimensions for a snug fit.

Features and Construction

The bag combines durability with practicality, using materials chosen for their resistance to road conditions and frequent use. The locking key ensures the bag stays attached while you ride, and the padded structure protects the contents from vibration.

Material and Build

Outer shell is black PU leather, a synthetic material that resists water splash and is easy to wipe clean. Inside, a thick sponge layer absorbs shocks and helps the bag maintain its shape. The base is a rigid ABS plastic plate that matches the contour of the original seat, distributing load evenly.

Size and Practical Fit

Available in a single 'L' specification, the bag is sized to replace the rear seat section exactly. It does not extend beyond the original seat line, so it keeps the bike's original silhouette. Check compatibility with BMW S1000RR, S1000RR Double R, and HP4 from 2009 up to and including 2018 models.

Uses and Placement

Ideal for riders who need to carry a few small essentials without adding a top box or tank bag. The locking mechanism gives peace of mind when you park briefly, and the low profile means it does not interfere with riding posture or passenger pegs.

Event or Professional Use

Track-day riders and club meet attendees can store a phone, garage door opener, or small tool kit. The bag's slim shape does not attract unwanted attention, and the lock prevents items from bouncing out on bumpy roads.

Everyday Home Use

Commuting and short trips become easier when you have a dedicated, secure spot for a wallet or keys. The waterproof cover protects contents from light rain, and the material wipes clean after a muddy ride.

Benefits and Buying Value

This accessory turns an unused passenger seat into useful cargo space. It is a one-piece solution that requires no additional brackets or straps, and the included key makes fitting straightforward.

Reuse and Low Maintenance

The PU leather shell is durable and resists UV fading. Maintenance is simple – a damp cloth removes road grime. The ABS base does not rust, so the bag can stay on the bike through changing seasons.

Why Choose This Product

If you own a late-model S1000RR or HP4 and need a lockable rear storage option, this bag offers a direct replacement at a lower cost than a branded alternative. It performs the same basic function as the original seat but adds a water-resistant compartment.