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The Sportster 3 and Sportster 4 are dock & play radios on the Sirius platform.

Sirius Sportster 3 (SP3) and Sportster 4 (SP4) 

Image Works With Sirius Radios


Produced: 2006-2009 (Discontinued)

Sportster 3
(Pictured without a Dock)

Sportster 4Sportster 4
(Pictured in a SUPV Car Dock)

The Sirius Sportster 3 and 4 radios will only work with SUPV (car), SUPH (home) and SUBX1 (boombox) docks. This is an easy radio for Many of the newer Sirius radios (Stratus 7, Starmate 8) are compatible with these docks. We recommend a Mounting Plate
to ensure the radio fits snug in the docks.

These two radios are slightly thicker than the "universal" radios (such as Sportster 5, Starmate 8) and requires the SUPV for car usage.

These were the first 5-volt-based Sirius radios. Previous Sirius radios were 12 volts.

The Sportster 4 features up to 44 minutes of pause/rewind playback. Meanwhile, the Sportster 3 does not offer any playback options. Both radios have built-in FM transmitter and can store 30 presets.

Please Note: The Sportster 3 and 4 are not compatible with the modern "PowerConnect" docks and power adapters.

We may be be able to repair your Sportster 3 or 4. Please visit our Repair Page for more details.

Compatible and Related Products

Replacement Radios

Home and Car Kits and Cradles


Home and Car Antennas

Home and Car Power Adapters


Speakers and Boomboxes



Car Mounting Options