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  3. HPI 86078

HPI Flywheel Box 4944258860787 34MM

86078 Hpi - Flywheel 34mm 21 Size Model# Box 5

( Brand: Hpi ), ( Manufacturer Part Number: 86078 ), ( Compatible Brand: Hpi, For Hpi ), ( Type: Flywheel ), ( Color: Silver ), ( Age Level: 17 Years Up ), ( Country Of Origin: Japan ), ( UPC: 944258860787 )

Review HPI Flywheel 34mm Size Model Box

The HPI 86078 Flywheel, with a diameter of 34mm and designed for use in a 21-box configuration, is an essential component for RC hobbyists and racers looking to optimize the performance of their RC cars. This high-quality flywheel is meticulously crafted to ensure consistent, reliable operation, making it an ideal choice for those seeking a competitive edge on the track.

The flywheel is manufactured from a robust, durable material that can withstand the rigors of high-speed racing. Its 34mm diameter provides an optimal balance between mass and rotational energy, resulting in smooth power delivery and improved torque. The 21-box design offers enhanced efficiency, reducing power loss and allowing for greater acceleration and top speed.

The HPI 86078 Flywheel's precision-machined surface ensures a perfect fit in your RC car's motor, minimizing any potential vibrations or play. This results in a more responsive and agile vehicle, allowing you to take on challenging tracks and tight corners with confidence. Additionally, the flywheel's superior design helps to prolong the life of your motor, reducing the need for frequent maintenance and repairs.

Installing the HPI 86078 Flywheel is a straightforward process, making it an excellent upgrade for both experienced racers and newcomers to the hobby. Simply replace the stock flywheel with this high-performance alternative, and enjoy the noticeable improvements in power, acceleration, and overall vehicle performance.

In summary, the HPI 86078 Flywheel is a must-have accessory for any RC car enthusiast or racer looking to maximize the potential of their vehicle. Its durable construction, optimized size and design, and easy installation make it an indispensable tool for those seeking to compete at the highest levels or simply enhance their RC driving experience.

The HPI 86078 Flywheel 34mm 21 Box is a popular aftermarket option for RC hobbyists looking to upgrade their vehicles' performance. Here are some potential pros and cons of purchasing this flywheel:

Pros:

1. Improved Power Delivery: The larger size and weight of this flywheel can help improve power delivery and acceleration in RC cars.

2. Durability: The flywheel is made of a strong material, which can help increase the lifespan of the RC car's powertrain.

3. Compatibility: This flywheel is compatible with a wide range of RC cars and engines, making it a versatile option.

4. Easy Installation: Installing the flywheel is a straightforward process, and it does not require any special tools or modifications.

Cons:

1. Increased Weight: The larger size and weight of the flywheel can make the RC car heavier, which can affect its handling and agility.

2. Higher Cost: Compared to stock flywheels, aftermarket options like the HPI 86078 can be more expensive.

3. Potential Vibration: Some users have reported increased vibration when using this flywheel, which can affect the RC car's performance and durability over time.

Conclusion:

The HPI 86078 Flywheel 34mm 21 Box can be an excellent investment for RC hobbyists looking to improve their vehicle's power delivery and durability. However, it is essential to consider the potential cons, such as increased weight and vibration, before making a purchase. Ultimately, whether or not this flywheel is right for you depends on your specific RC car setup and driving preferences.

Recommendation:

If you are looking to upgrade the flywheel on your RC car and are willing to accept the potential cons, the HPI 86078 Flywheel 34mm 21 Box is an excellent option to consider. However, it is essential to ensure that it is compatible with your RC car and engine before making a purchase. Additionally, you may want to consider other aftermarket flywheels to compare features, pricing, and performance.

Details:

I do my best to keep your shipping costs as low can. I n some cases will bubble wrap a package and then re wrap it with shipping paper if keep your costs down feel confident arrive safely to home.

Shipping time. If I have missed something please understand it has been an honest mistake. I team / items will not be shipped until the e c heck has cleared in my account. I want you to be confident in the decision are making.

HPI - FLYWHEEL 34mm 21 SIZE model # 86078 BOX 5. I truly invest a great deal of time photographing and describing the items list to best my ability, including any flaws in detail. I want you to be happy with the item / items purchase.

part #: 86078 price

  • $11.99

specifications rcparta:

  • brand: Hpi
  • mpn: 86078
  • compatible brand: Hpi, For Hpi
  • type: Flywheel
  • color: Silver
  • age level: 17 Years Up
  • country of origin: Japan
  • upc: 944258860787

general rcparta:

  • condition: New
  • Radio Control Control Line > RC model Vehicle Parts Accs > Other RC Parts Accs

returns rcparta:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days
  • method: Money back

shipping rcparta:

  • class: Standard, Expedited
  • cost: $7.95
  • service: USPS First Class, USPS Priority Mail Flat Rate Envelope, USPS Priority Mail Express Flat Rate Envelope
  • carrier: USPS
  • type: Calculated
  • transit: 5-12 Days

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seller rcparta:

  • rating: 100.0%
  • city: Wyandotte, Michigan
  • # reviews: 6756

offer rcparta:

  • started: February 6, 2026
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 2
compatible brand: hpi, for hpi, type: flywheel, age level: 17 years up, country of origin: japan,
category: toys & hobbies > radio control line > rc model vehicle parts accs > rc parts accs, color: silver, sku: 9691465599889623,

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  • Offer #1: $11.99 price + $8.60 shipping estimate = $20.59* total. I want you to be confident in the decision you are making.+$8.60 shipping

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