SKU: 83146432403

Kyosho Mini-Z MR-04 RWD Readyset 1976 Porsche 934 RSR Turbo (Vaillant #9) w/KT-531P 2.4GHz Radio

Sale price$179.99 Regular price$199.99
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

Kyosho Mini-Z MR-04 RWD Readyset 1976 Porsche 934 RSR Turbo (Vaillant #9) w/KT-531P 2.4GHz RadioElectric On Road Micro Race Car with Advanced MR 04 Chassis The MR 04 RWD Mini Z ReadySet with 1976 Porsche 934 RSR Turbo Body by Kyosho delivers exceptional handling and precision for racers of all levels. With a fully assembled chassis and included transmitter, you can start racing immediately by simply adding batteries. The MR 04 chassis enhances performance with a lower center of gravity, upgraded steering, and a refined suspension system for

Electric On-Road Micro Race Car with Advanced MR-04 Chassis

The MR-04 RWD Mini-Z ReadySet with 1976 Porsche 934 RSR Turbo Body by Kyosho delivers exceptional handling and precision for racers of all levels. With a fully assembled chassis and included transmitter, you can start racing immediately by simply adding batteries. The MR-04 chassis enhances performance with a lower center of gravity, upgraded steering, and a refined suspension system for better control. Whether you're racing indoors or tuning for competitive performance, the MR-04 Mini-Z offers an exciting and customizable driving experience.

About the MR-04 Mini-Z


Advanced MR-04 Chassis

The MR-04 chassis builds on the success of the MR-03 with improvements that enhance handling and stability. A lower center of gravity improves cornering and straight-line performance, giving you a more responsive driving experience. The updated front suspension system maintains optimal tire contact, increasing grip and steering accuracy. These refinements make the MR-04 an excellent choice for both casual drivers and competitive racers.

Improved Steering

The MR-04 features updated front knuckles with integrated kingpins that reduce scrub, allowing for sharper and more controlled steering. Enhanced ball bearings minimize rotational resistance, providing smoother and more efficient operation. The rear suspension is equipped with a coil spring damper to absorb track shocks, with the option to upgrade to an oil-filled shock absorber for improved stability on challenging surfaces.

Customization & Versatility

Designed for maximum versatility, the MR-04 supports full ball bearing specifications and is compatible with a variety of optional parts. The geared differential ensures smooth cornering, while the optional gyro unit (KYOMZW711 - sold separately) offers even more precise control. Whether you're a beginner or an experienced racer, the MR-04 provides numerous options for upgrades and performance tuning to match your driving style.

Features:

  • Fully assembled chassis and transmitter
  • Lower center of gravity for improved handling
  • Updated front suspension for better tire contact
  • Integrated kingpin design for sharper steering
  • Improved ball bearings for smoother operation
  • Rear suspension with coil spring damper
  • Geared differential for smooth cornering
  • Compatible with optional gyro unit for advanced control (KYOMZW711)
  • Pre-painted and highly detailed 1976 Porsche 934 RSR Turbo Body

Includes:

  • (1) Factory Assembled MR-04 Chassis
  • (1) Pre-Painted 1976 Porsche 934 RSR Turbo Body
  • (1) Perfex KT-531P 2.4GHz Transmitter
  • (1) Front Tread Adjustment Parts Set
  • (4) Pinion Gears (6T, 7T, 8T, 9T)
  • (1) Pinion Gear Tool
  • (1) Wheel Wrench
  • Product Manual

Needed To Complete:

  • (4) AAA Batteries for Transmitter
  • (4) AAA Batteries for Chassis

Specifications:

Scale Mini-Z
Drive RWD
Power Source Electric
Length 6.99in (177.5mm)
Wheelbase 3.3in (86mm) s
Width 3.07in (78mm)
Height 1.87in (47.5mm)
Weight 5.98oz (169.6g)
Electronics
Motor Brushed
ESC Brushed
Connector -
Servo -
Wheels
Front Mini
Rear Mini
Hex -
Tires
Front Offset Narrow +3.0mm (RWD)
Rear Offset Wide +3.0mm (RWD)
Assembly Level RTR

*Tech Note: Ready-to-Run models come equipped with all electronics and include the transmitter needed for use. Please check the "Needed To Complete" above to make sure you have everything you need to get out and enjoy your RC model.

**Tech Note: Syncro KT-531P transmitter uses FHSS 2.4GHz and is not compatible with existing ASF, MHS, or FHS 2.4GHz systems.

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: 83146432403

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Jen Siefert
Dallas, US
★★★★★ 5
My dog LOVES this ball
Size: Medium, Size: Medium
Does your dog destroy tennis balls in seconds? Yes? Then your dog NEEDS this ball! It's squishy like a tennis ball, fits in ball launchers (even the cheap ones) and bounces when it hits the ground. My dog has been literally playing with this ball all day and not a single mark on it! The only bad thing is that it does not float. Definitely worth the money! Put it in your cart!
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Reviewed in the United States on March 8, 2026
W
Verified Purchase
Wolf-Haven
Alexandria, US
★★★★★ 5
Perfect for ball demolishers
Size: Medium
The dogs love the chuck it brand. I don’t know what it’s made of but they go crazy over them. Will not play with another ball. Wonder if it’s “laced” with an addictive scent. Have pits. Very durable. Not able to chew to pieces. Last for about 6 months before there is a small break. I keep a back up because when the ball goes missing the house is in chaos. 😆 🤪
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
T
Verified Purchase
Tatiana
Los Angeles, US
★★★★★ 5
Most durable ball!
Size: Medium
This are my dogs fav ball 😍 they last forever!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
N
Verified Purchase
Nana
Port Orchard, US
★★★★★ 4
Chuckit medium rebound balls
Size: Medium
My 8 month old German shepherd dog loves these balls. They are easy to throw, they bounce great, they are very chewable! She keeps one in her mouth most of the time. It satisfies her need to chew and she does not chew other things. She drops it in the water and lets the hole fill up and drinks that way. The only problem that has caused is suction in her mouth and difficulty in dislodging it for her. However, she would be lost without it!
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Reviewed in the United States on April 19, 2023
H
Verified Purchase
Helena
Boise, US
★★★★★ 5
These are definitely indestructible
Size: Medium
Both of my dogs can destroy a ball in a matter of minutes if I let them play with them (supervised) as is. Well not with these balls. They are the ONLY ones I have found that are 100% indestructible. Please only let your dogs play with these as a toy when supervised though. They go really far when throwing them, so both dogs get a good amount of running and exercise with these. I also bought these because they have the hole in the middle of the ball which is very important in the event that a dog gets one stuck at the back of their throat. This allows them to breath unlike those without this hold. It's an unlikely event, but as dog owners, we all need to be aware of this and educate ourselves on what to do if this SHOULD happen. This isn't a scare tactic, nor a reflection of this particular brand, it can happen with any type of ball. My two dogs are about 45ish lbs and the size is perfect for them, I don't want anything smaller than this. They love them. There is no annoying squeak. Really easy to wash after use. Some balls take forever to get the slimy saliva off, but these don't.
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Reviewed in the United States on September 25, 2025

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