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ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L
ROCKBROS Bike Frame Bag for Super 73 S2 is a 4.5L waterproof hard shell storage bag designed specifically for Super 73 S2 e-bikes. Priced at $42.99, it offers secure, reflective, and weather-resistant on-bike storage for tools, phone, and essentials during commutes or rides.
$42.99
● In stock
Buy at Yiwu Rock Sports Goods →Price and availability may change. Click to see current details on Yiwu Rock Sports Goods.
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Key features
- Exclusive fit for Super 73 S2 only
- 4.5L hard EVA shell retains shape
- Fully waterproof with sealed seams
- Reflective logos for night safety
- Double zipper for wide access
- Internal mesh pockets for organization
- Three-point hook-and-loop mounting
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Pros
- +Perfect fit for Super 73 S2 frame
- +Keeps contents dry in heavy rain
- +High visibility with reflective branding
- +No tools needed for installation
- +Durable materials withstand daily use
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Cons
- −Only fits Super 73 S2, not universal
- −Limited capacity for long tours
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About ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L
What is ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L?
The ROCKBROS Bike Frame Bag is a custom-fit, 4.5L hard-shell storage solution engineered exclusively for the Super 73 S2 electric bike. Made from durable PU, EVA, and polyester, this lightweight 345g bag resists water and maintains shape even in rain. Its precise 41x11x11cm dimensions ensure a snug fit within the bike’s frame triangle, eliminating bounce during rides. Ideal for urban commuters and e-bike enthusiasts, it replaces bulky backpacks with integrated, accessible storage.
Key features
- Custom Fit — Designed only for Super 73 S2 frame; ensures secure, rattle-free installation.
- 4.5L Hard Shell Capacity — Rigid EVA construction holds shape and protects contents.
- Full Waterproofing — Seamless build with PU coating and double zippers blocks rain.
- Reflective Safety Logo — Large reflective branding on both sides boosts night visibility.
- Smooth Double Zippers — Wide-opening, durable zippers allow easy one-handed access.
- Internal Mesh Pockets — Organized compartments keep small items separated and secure.
- Three-Point Hook-and-Loop Mount — Installs quickly without tools; stays stable on rough terrain.
Who is ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L for?
This bag serves Super 73 S2 owners seeking hands-free, weatherproof storage for daily commutes, weekend adventures, or tool carrying. It’s perfect for riders who want to ditch backpacks and keep essentials—like phones, wallets, keys, and repair kits—secure and dry. Urban cyclists, delivery riders, and e-bike tourers benefit most from its rugged, reflective design.
How does ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L compare?
Unlike universal frame bags that require adjustments, this model offers a plug-and-play fit for the Super 73 S2. Compared to soft-shell alternatives, its hard EVA shell resists crushing and maintains internal space. It outperforms standard polypropylene bags in waterproofing and visibility thanks to full-seam sealing and large reflective elements. While not compatible with other bikes, its tailored design ensures superior stability over generic mounts.
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Best use cases
- →Daily e-bike commuting
- →Carrying repair tools and pump
- →Storing phone, keys, wallet
- →Rainy weather riding
- →Night riding with added reflectivity
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Is ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L right for you?
Buy this bag if you own a Super 73 S2 and want reliable, waterproof frame storage. Not for other bike models. Ideal for commuters and casual riders. No installation skill needed. Consider a larger pannier or backpack if you carry more than 4.5L of gear regularly.
How it compares: Compared to generic frame bags, this ROCKBROS model offers superior fit, waterproofing, and visibility. Hard shell beats soft bags in shape retention and crush resistance, though less flexible for odd-shaped items.
Are There Active Yiwu Rock Sports Goods Coupons for This Product?
Coupon Code ⚠️ Unverified
Expires Dec 31 Loyalty Program Exclusive
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Frequently Asked Questions
What bikes is the ROCKBROS frame bag compatible with?
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This bag is designed exclusively for the Super 73 S2 electric bike. It will not fit other models due to its custom shape and mounting points. Always verify your bike model before purchase.
Does the bag resist heavy rain and splashes?
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Yes, the PU-coated EVA shell and seamless double zippers provide excellent waterproofing, keeping contents dry even in downpours or wet trail conditions.
How do you install the ROCKBROS frame bag?
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It uses three hook-and-loop straps that attach to the bike frame—no tools required. Simply align and secure the straps for a stable, rattle-free fit.
Is the ROCKBROS bag visible at night?
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Yes, it features large reflective logos on both sides, enhancing rider visibility and safety during low-light or nighttime riding.
Can you fit a phone and wallet inside?
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Yes, the 4.5L interior with mesh pockets easily holds a smartphone, wallet, keys, earbuds, and small tools without overcrowding.
How much does ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L cost?
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ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L is $42.99 at Yiwu Rock Sports Goods. Prices may change — click through to Yiwu Rock Sports Goods for the latest.
Is ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L in stock at Yiwu Rock Sports Goods?
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Yes, ROCKBROS Bike Frame Bag for Super 73 S2 Hard Shell Bike Bag Waterproof 4.5 L is currently in stock at Yiwu Rock Sports Goods.
Are there coupon codes for Yiwu Rock Sports Goods?
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Yes — Love Those Deals currently tracks 2 active Yiwu Rock Sports Goods coupons. See the coupons section on this page to copy a code before checkout.
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Specifications
- SKU
- 30120021001
Last updated May 14, 2026