
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
For Your Every Summer RSVP, with Code: SUMMER15
Description
Firestik II FS4-B 4 Ft (122cm) "FS" Series Mechanical Tunable-Tip CB Radio Antenna BLACKTop Loaded: 5 8 wave: EZ 'bare hands' tunable tip: voltage increasing coil design: unmatched, glass fiber strand to resin ratio solid core: exceptional heat disipation rate for power users: static reducing, UV protecting covering. If you took the proven features and performance of the famous "KW" series antennas and added a unique tuning mechanism to the top, you would own the equivalent of a Firestik II, "FS" Series antenna. Aside from the ease of
- Top-Loaded: 5/8 wave: EZ 'bare-hands' tunable tip: voltage increasing coil design: unmatched, glass-fiber strand to resin ratio solid core: exceptional heat disipation rate for power users: static reducing, UV protecting covering.
- If you took the proven features and performance of the famous "KW" series antennas and added a unique tuning mechanism to the top, you would own the equivalent of a Firestik II, "FS" Series antenna. Aside from the ease of tuning, the patented design broadens the antennas bandwidth to keep SWR lower over more channels. The upper coil extension also increases the power handling capability of the antenna. If you want to see the Firestik II anatomy. All "FS" antennas are compatible with autos, trucks, vans, motorcycles and ATV's in a single antenna configuration when metallic ground plane is available. Or, they may be used in dual (co-phased) configuration on any vehicle made from any type of material. Like all CB antennas, the "FS" antennas should be fine-tuned (SWR) in their final mounting location. If you have ever tuned a non-tunable tip antenna, you will have a real appreciation for the "FS" antennas. To tune a "FS" antenna, you just pop-of the tip and turn the adjustment screw up or down as needed. All "FS" antennas exceed the requirements of any CB radio, new or old. Aside from the hi-performance loading coil that maximizes the transmit/receive functions of your CB, these top-loaded antennas will also receive the NOAA emergency weather alert and national weather broadcasts for radios with those features.
- The "FS" antennas are 100% American made with 100% American materials. To maintain a balance between flexibility and ruggedness, we use a custom blended, glass fiber reinforced shaft. Each is wound with heavy insulated copper wire to prevent the oxidation and shorted windings often found on non-Firestik antennas. The tunable tip mechanism is made from rust-proof brass and has a rubber o-ring to hold the adjuster in place after tuning. Our 3/8"-24 threaded base has a tapered contact point that works especially well with Firestik mounts and accessories. The tapered "lug-nut" effect transfers stress away from the threads and reduces the possibility of vibration induced loosening of the antenna in its mount. Each antenna is covered with a static reducing, water-tight sleeve containing UV and pigment stabilizers. For peek performance we recommend that you use one of our 18-foot Fire-Flex coaxial cables with these antennas.
- All "FS" series antennas are factory bench tested for resonant frequency and overall quality.
- ALL antennas, regardless of style or manufacturer, MUST be tuned after installation on the vehicle. Transmitting antennas are not "plug-n-play" devices.
- 4 Ft (122cm)
- Rated @ 900 Watts
- Black with Red tip
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 304 reviews
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Product Reviews
★★★★★ 1
Doesn't work with curvx
Size: 26 Pcs for Roborock Saros 10R
Bags dont actually fit the curvx
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Love the quality and the price.
Size: 26 Pcs for Roborock Saros 10R
Loved that I don’t have to buy the expensive things from Roborock. This works perfectly for my vacuum and very similar quality as the original.
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Reviewed in the United States on May 2, 2025
★★★★★ 5
Eufy 11S Max Replacement Parts Work Well
Size: 20 PACK
For the 11S Max, the parts fit great. Changing out the parts is easy, and the parts are durable. I like that this kit has a new filter for everytime you change out the rotating brushes. Changing out the parts make the eufy vacuum cleaner function better everytime. I can’t tell a difference in the noise level when changing out the parts. Overall, thus is totally worth the money to keep the Eufy running in its best shape.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Great buy
Size: 20 PACK
This is a great buy to replace filters etc on my robot
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Perfect for my Eufy
Size: 20 PACK
Nice to change out parts regularly. Easy to use. Fit & work perfectly
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Reviewed in the United States on November 17, 2025
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