SKU: 81018620869

O.S. Engine 55HZ-H Hyper Ringed .55 Helicopter Engine

Sale price$171.00 Regular price$190.00
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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For Your Every Summer RSVP, with Code: SUMMER15

Description

O.S. Engine 55HZ-H Hyper Ringed .55 Helicopter EngineThis is the OS 55HZ Hyper Ringed Helicopter Engine with the 40L Carburetor. Best suited for 3D flight! Amazing power equal to 60 size engine changes the common knowledge of the 50 size helicopter engines! It can be installed in the 50 size helicopter without modification due to the same mounting bolt pattern and silencer installing size as the 50SX H Hyper. New rear bearing is employed for improved anti rusting, higher durability and more stable high

This is the OS 55HZ Hyper Ringed Helicopter Engine with the 40L Carburetor.



Best suited for 3D flight! Amazing power equal to 60 size engine changes the common knowledge of the 50 size helicopter engines! It can be installed in the 50 size helicopter without modification due to the same mounting bolt pattern and silencer installing size as the 50SX-H Hyper. New rear bearing is employed for improved anti-rusting, higher durability and more stable high speed running. Newly designed 40L carburetor features twin needle. A best fit new silencer will be available at the same time.

This enables to adjust hovering and high speed independently. Four armed throttle lever is employed to synchronize with servo stroke of various brand servos.

Most major internal parts are newly designed pursuing the best performance required for the 50 size helicopters.
The first helicopter muffler from O.S., PowerBoost Pipe 55 will be available at the same time. This pipe develops 100% performance of the 55HZ Hyper

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 81018620869

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4.6 ★★★★★
Based on 13 reviews
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Verified Purchase
danielle hendrickson
Phoenix, US
★★★★★ 2
Not for super chewers
Color: Hambone Super Chewer, Size: M/L
Had to take it away from my dog the same evening I gave it to him because a chunk came off. I did not want him to choke on the pieces.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
D
Verified Purchase
Durenda
Alexandria, US
★★★★★ 5
A favorite for my boys!
Color: Hambone Super Chewer, Size: M/L
My dogs love this toy, it satisfied their need to rip up a toy and still allowed them to play long after the top layer was torn apart to enjoy! It bounces well and has still held up with my chewers, this is still one of my dogs favorite toys to play fetch with!
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Reviewed in the United States on May 20, 2026
J
Verified Purchase
Jackie H
Grantham, US
★★★★★ 5
Great toy
Color: Hambone Super Chewer, Size: M/L
My dog loves this toy so much. He's not quite so aggressive with his chewing, now that he's getting older, but this toy lasted through his younger years, and recently started to show signs of wear. He was so sad when I threw it out, that I had to replace it. Glad it still exists - we got the first one probably 5 years ago.
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Reviewed in the United States on January 4, 2026
S
Verified Purchase
shannon
Fort Morgan, US
★★★★★ 5
Great for heavy chewers
Color: Hambone Super Chewer, Size: M/L
Our dog is a hard core chewer! This toy is very durable. Even the covering has lasted. We assumed we would need to take the cover off right away but it’s still going after 3 months. It’s definitely chew resistant
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Reviewed in the United States on May 27, 2026
J
Verified Purchase
JJ
Grantham, US
★★★★★ 4
Great treat dispenser
Color: Hambone Super Chewer, Size: M/L
Great rubber toy, the outside fabric did not last long, so glad that it is a treat holder/dispenser otherwise it would have been done for in about 10min. The opening for the treats is pretty small so can only fight thinner broken up treats. Great for larger dog that likes to dissect her toys, keeping her entertained longer and no fluff all over the house
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Reviewed in the United States on July 28, 2025

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