The only damped mount here, and the only one that names a phone it refuses
JOYROOM Dual-damper clamp mount, 399 g (14.1 oz)
A heavy clamp mount with a dual pneumatic vibration damper, metal tie rods and a press-to-lock mechanism for phones to 7 inches.
What you are getting
A clamp mount with a dual pneumatic vibration dampener claimed to absorb 95% of vibration, a press-to-lock mechanism, all-metal tie rods and reinforced ball heads, silicone on the panel, the arms and all four corners, 360° rotation, for phones of 4.7 to 7 inches with cases up to 0.71” and handlebars of 18 to 34 mm (0.71 to 1.34 in). 399 g (14.1 oz). $29.99.
“Keeping your phone stable even when riding on bumpy roads or 150 mph high speed”, and “even when driving at a high speed of 150”.
One hundred and fifty miles per hour is not a cycling number. Neither is 399 g (14.1 oz) — that is five times the Kinizuxi strap mount on this page and four and a half times the Bone, and on a handlebar it is weight in the worst possible place for steering feel.
What a motorcycle mount brings to a bicycle is overbuild: metal rods instead of plastic, a damper, and a locking mechanism designed for a vehicle that vibrates far more than a bike.
Whether that is worth 399 g (14.1 oz) on a bicycle depends entirely on the bicycle. On an e-bike or a cargo bike, easily. On a road bike, no.
The damping claim is the only one of its kind on this page
“Pneumatic shock-absorbing and anti-shake dual dampener system that effectively cushions up to 95% of the vibration.”
No other mount in this survey claims a damping figure, and Quad Lock — which sells a damper as a separate accessory — does not mention damping at all on its mount listing.
Why it matters is not comfort but cameras: sustained high-frequency vibration damages the optical image stabilization in a phone camera, and a hard-mounted phone on a bad road transmits all of it. A damper is the mitigation. Ninety-five per cent is JOYROOM’s figure, measured by a method it does not give.
It is the only listing here that names a phone that does NOT fit
“[Please note: Samsung Galaxy S24 Ultra / S23 Ultra may not fit]”
Five other mounts on this page list compatible models at length and refuse nothing. A published exclusion is worth more than a list of inclusions — and the reason is the case thickness limit, 0.71” (18 mm (0.71 in)), which is generous and still not enough for the widest phones.
It describes the problem it was redesigned to fix
“Upgraded with all metal pull rods and reinforced core ball heads in 2026, effectively solving the plastic handlebar clamps problem of breakage. After more than 5,000 safety tests.”
A manufacturer naming the failure of its own earlier design — a broken plastic clamp — and the fix. The “5,000 safety tests” is a count without a method, but the mechanical statement is clear and checkable: the rods are metal.
Press to lock, in under a second
“Place the phone gently on the center button and press the phone to lock it in less than 1 second. Press the clamp arms on both sides to quickly release it.”
One-handed, which matters at a junction. And like the Lamicall on this page, there is a safety catch to engage separately: “make sure the safety button behind the mount is locked”.
18 to 34 mm (0.71 to 1.34 in), which is narrower than it looks
A 35 mm (1.38 in) mountain handlebar — a current standard, and one Quad Lock explicitly fits — is outside this range. So is a 15 mm (0.59 in) scooter stem, which the Lamicall covers.
Measure the bar where the clamp will sit.
What is not published
No damping test method, no retention force, no waterproofing, and no weight breakdown between the damper and the clamp. The seventh bullet is a gift-giving pitch with three numbered sub-points and no information.
Availability
Read on the day this page was built: $30 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-06. The live price is at the top of the page.
