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Description
metal gear servo motor 20kg Metal Gear Servo (CCW rotation) for Viper Lifter & Super Scooper-ClearanceReplacement Servo for the Viper Lifter Add On. Input: 4. 8V 10. 0V If your robot's battery is higher than 9V, simply run the servo power from a 9V regulator. Specifications: Range of Motion: 270 on a full 500 2500 PWM range. On a standard robot remote you'll have closer to 1000 2000 and achieve a real life travel of about 120. Rotation: Counter Clockwise Dimensions: 40mm x 40mm x 20mm (1. 57" x 1. 57" x 0. 79") Weight: 62g (2. 19oz) Construction: All
Replacement Servo for the Viper Lifter Add-On.
Input: 4.8V - 10.0V If your robot's battery is higher than 9V, simply run the servo power from a 9V regulator.
Specifications:
- Range of Motion: 270° on a full 500-2500 PWM range. On a standard robot remote you'll have closer to 1000-2000 and achieve a real life travel of about 120°.
- Rotation: Counter Clockwise
- Dimensions: 40mm x 40mm x 20mm (1.57" x 1.57" x 0.79") Weight: 62g (2.19oz)
- Construction: All metal gears, double ball bearing
- Accepts 25T Futaba-splined servo arms.
Performance Info:
- 9.0V
- Speed: 0.1 sec/60 degrees
- Stall Torque: 35kg-cm
- 7.4V (2s)
- Speed: 0.15 sec/60 degrees
- Stall Torque: 30kg-cm
- 6.0V
- Speed: 0.2 sec/60 degrees
- Stall Torque: 22kg-cm
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Exchange/Return Notes
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- Final sale items are not eligible for returns or exchanges.
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4.4 ★★★★★
Based on 2202 reviews
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Product Reviews
★★★★★ 5
It's A Whistler!
Size: Medium (Pack of 1), Style: Pack of 1
This Chuckit! Whistler Ball is basically a regular fetch toy that decided to become an annoying little teakettle mid-air. My dog goes absolutely nuts for it—every throw sounds like a tiny referee is shrieking "foul!" the whole way across the yard. He chases it harder than he chases the mailman, and bonus: I can actually find it in tall grass because it's screaming for help. Super bouncy, tough enough that he hasn't destroyed it yet (miracle), and now our walks sound like a low-budget horror movie.
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Reviewed in the United States on February 14, 2026
★★★★★ 4
Great buy
Size: 2 Count (Pack of 1), Style: Pack of 2
Easy to track balls. My dog loves them and I like that they whistle when you throw them cause some times my dog loses track of it in the air. This helps because they can hear where it's going. Will buy again.
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Reviewed in the United States on January 10, 2026
★★★★★ 5
My Dog's Favorite Balls
Size: 2 Count (Pack of 1), Style: Pack of 2
My dogs love these balls and won't play with any others. My lab has to carry the orange ball and track and retrieve the blue one. We have a system!
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Our perfect chew toy for a relentless chewer!
Size: 2 Count (Pack of 1), Style: Pack of 2
We have looked high and low for a ball that our Australian Shepherd couldn't destroy. Read on to find out why we are sticking with this one.
We've used other Chuckit! products in the past to mixed degrees of success. We absolutely love the ring fetch toy, though the dog can destroy those rings in a couple days. We tried other "nearly indestructible" balls only to have to throw them away within a couple days because our dog had destroyed them and left small pieces around the house for the baby to find.
We have been COMPLETELY satisfied by these balls. They fit with the Chuckit! stick, which is a great bonus, but the most important thing is the dog hasn't been able to get pieces torn out of them. His orange one is his "indoor toy" and he's been going to town on it for weeks without any indication of wear. We periodically inspect it and are always floored to see that it's generally in the same condition as when we gave it to him.
The orange color did fade a little when he left it outside for a few days in the sun, but considering how well it works otherwise, this didn't concern us at all.
The "whistling" aspect of this ball is... well, an interesting gimmick but I wouldn't buy it if that's what you're interested in. Sometimes it makes noise in flight, other times it doesn't. We don't care. He chews it until he's tired of it (which is usually hours) and it squeaks and squorks on his teeth which keeps him happy as a clam.
We honestly didn't think we'd find a ball that could keep up with his chewing, but this one has been phenomenal. We cannot recommend it enough!
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Reviewed in the United States on January 30, 2021
★★★★★ 5
Our German Sheppard loves these
Size: Medium
These cost a bit more than tennis balls, but they are so much nicer and longer lasting. For starters, they stay cleaner than tennis balls because they’re smooth rubber. Dirt won’t build up on them and if anything does stick, like grass or soil, it falls off once the dog slobber dries. They’re also thick, so they don’t fall apart or blow out like a normal tennis ball does in our dog’s jaws after 30 seconds. Our GS chomps on these like crazy and the only damage they’ve suffered is a crack that developed from the edge of the hole, but the crack is growing very slowly and none of these balls have totally failed yet. The balls do whistle when thrown ant high speed and that may help a dog track and locate it, but I’m not sure. Our neighbors hear the whistling too so it’s far from silent. Lastly the orange ball is easy to locate out in our yard, but the dark blue practically disappears.
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Reviewed in the United States on April 6, 2025