Ignitions and Electrical› Charging Systems
Alpine
battery tender
SKU: R-W10D4
Description
This subwoofer boasts a High-Amplitude Multi-Roll (H.A.M.R.) surround that allows for efficient air movement and 20mm of total cone excursion for increased accuracy. It also includes a polypropylene/ceramic composite dust cap for rigidity and internal damping, contributing to smooth bass response and tight bass reproduction.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Alpine |
| Part Number | R-W10D4 |
| Category | Ignitions and Electrical |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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