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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
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Description
4iiii - Dual Side Precision Pro GRX RX810 Power Meter4iiii DUAL SIDE PRECISION PRO GRX RX810 POWER METER Ridden by the pros, the PRECISION PRO dual side power meters deliver all the benefits of 4iiii's left side model (exceptional accuracy, lightweight design, ANT+ and Bluetooth compatibility, 3D power meter technology), plus a specific breakdown of left and right wattage. Perfect for those who need specific power output from each crank side, or anyone who simply wants the best power meter on the
4iiii - DUAL SIDE PRECISION PRO GRX RX810 POWER METER
Ridden by the pros, the PRECISION PRO dual-side power meters deliver all the benefits of 4iiii's left-side model (exceptional accuracy, lightweight design, ANT+ and Bluetooth compatibility, 3D power meter technology), plus a specific breakdown of left and right wattage. Perfect for those who need specific power output from each crank side, or anyone who simply wants the best power meter on the market.
- 3D power meter technology (patent pending) measures tri-axial strain on the crank
- Accurate, consistent data
- Lightweight, compact design
- Battery status indicator via 4iiii app
- Compatible with ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products
- User-friendly app and configurable rider compensation scale factor
- Easy setup and maintenance
- Over-the-air upgrade capability for adding new features and updates
- Weight: 25 grams (power meter only)
- Data accuracy: +/- 1% error margin
- Battery life: 100+ hours on 2032 coin cell battery
- Battery status indicator: Alert at 15% battery power
- For display compatibility click here
- For service and software documents click here
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
4.8 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
One TOUGH toy!
Size: Large (5" x 3.25" x 9")
The first of these toys survived 2 Huskies, an Aussie, 2 GSDs and our Pitmix, I only got a new one because first one is soooo old! It is a favorite toy and there would be unhappiness if it were not available. This is one TOUGH toy, great bounce and spin, we love this toy.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Durable, long lasting . 8months of use before came apart.
Size: Large (5" x 3.25" x 9"), Size: Large (5" x 3.25" x 9")
I bought this toy may 2025 it is now January 2026 I am finally having to replace . I have a chessie , almost 2 yo he is not an insane chewer but he does make the fabric “ tuff toys” look like a joke . Those are gone in ten minutes . This one last and last and last . It’s a great buy. In process of ordering my third one decided to write a review. I never write reviews . Such a simple product but worth every penny . My dogs favorite toy . Will stay in the arsenal .
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Reviewed in the United States on January 28, 2026
★★★★★ 4
Not recommended at all for heavy chewers
Size: Large (5" x 3.25" x 9"), Size: Large (5" x 3.25" x 9")
They advertise this toy as a heavy chewer toy and it’s not. My big dog chewed through it in a couple days and that’s with me yelling at him to chew it gently. I like the toy and it’s great for smaller less advid chewers. I put kibble in the holes and watch my Shiba go to town throwing it around but my mixed lab/dane has a nub of rubber left. So maybe don’t advertise it as a heavy chewer toy. The rubber is way too soft for you to be suggesting that. It did come with a strong chemical smell that my dogs didn’t like and I had to wash it 3x before they’d touch it.
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Reviewed in the United States on August 5, 2024
★★★★★ 5
Great value, durable, enriching
Size: Large (5" x 3.25" x 9")
$5 for the large size for our 15lb chiweenie mix was PERFECT. Her emotional support chew toy got destroyed and I wanted something I felt safe leaving in her kennel while I was out. She anxiously chews. Bought this to try out and she took a bit to get into it, but now she loves it. Probably could’ve gone with a smaller size, but oh well. We put treats inside and smear peanut butter or wet food on the dumbbell like ends for enrichment. So far has held up over 3 weeks.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
A good choice
Size: Large (5" x 3.25" x 9")
Initially I put this toy in my save-for-later on Amazon. As I was perusing through one morning I noticed that it had been reduced so, I ordered it. It arrived promptly, was well packaged, and has been a good addition to my Doberman's toy box. It has not been chosen as the ultimate favorite, but he likes enough to select it, carry it around, and chew on it. To us there is no unpleasant odor. It is good solid rubber and despite all of his chewing maneuvers, there are not holes, marks, or bits of the ball where they should not be. He carries the toy in his mouth in the middle of the toy, but likes to lie on the floor, hold one ball end in his paws and chew on the other. Overall, I would give this a grade of a good, solid, reliable dog toy.
I cannot address suction power, because I am not sure what is meant by that in a toy that is shaped like an old fashioned dumb bell.
Top 3 Likes:
-Durable rubber chew toy for large dog that is easily carried
-Bright color making it easily visible
-No offensive odors
Top 3 Dislikes:
-Serviceable toy, not a favorite
-Could be chewed into little pieces by a very aggressive chewer (mine is not)
-Poor at dispensing treats; they fall right out with no challenge
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Reviewed in the United States on June 16, 2024