Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit

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Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
Price: $349.99
Discontinued Online
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.

This is the Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit. Having achieved the golden double of 1st place and TQ in the 2WD class at the 2013 IFMAR Electric Off-Road World Championship, the RB6 series has maintained its performance edge through continuous running change improvements. The RB7 represents the next evolution that excels with the increased power & speed on high-grip artificial turf and carpet surfaces of today’s off-road racing scene.

Based on the ultra low center of gravity of the RB6.6 low-down midship, the RB7 features improved flex characteristics from its thinner, lighter, and 4mm shorter wheelbase main chassis. Combined with an aero body design, high downforce wing, updated front and rear suspension arms and revised ackerman steering knuckles, the RB7 is ready to take on the competition.



  • 4mm shorter, 2.5mm thick, 7075 hard anodized aluminum chassis, delivers faster cornering and increased grip with optimized flex.
  • Improved front knuckles/hubs provides better handling with updated ackerman location.
  • Updated body and wing with integrated fin for more traction and stability.
  • Gull-wing style front suspension arms for improved response, with optional front sway bar mounting positions.
  • Multi-configuration rear suspension arms. (short/long via inserts)
  • Aluminum rear suspension holders included in kit.
  • Wing is now screw mounted and wing stay has improved durability.
  • Updated design "waterfall" transmission brace.
  • Updated ring captured universals for increased reliability.
  • Includes lowered spring cups for high traction situations

In-Depth Features:

  • Chassis: Using the same A7075 T6 grade hard anodized aluminum as the RB6.6, the 0.5mm thinner RB7 main chassis is milled for lighter weight with optimal flex. 4mm shorter wheelbase improved cornering and responsiveness.
  • Body: Body and wing has integrated fin that continues into the wing for increased stability and more traction. Lower and narrower cockpit with revised windshield angle provides a more responsive feel than it's predecessor.
  • Front Suspension Arms: Gullwing front suspension arms provide better response and improved mid corner steering.
  • Steering Knuckle: Steering knuckles with revised ackerman position improves corner speed.
  • Gear Box: Low down 3 gear mid ship transmission is complemented by a new "waterfall" transmission brace designed for optimal chassis flex. With additional parts, the gearbox set up can be changed to rear motor, 3 gear mid, or 4 gear mid, to suit any track conditions you might encounter.
  • Rear Suspension Arms & Universals: The multi-configuration rear suspension arms length can be adjusted via inserts to suit any conditions. Revised universals have ring captured pins to improve reliability under load.
  • Rear Wing: Updated design thicker rear wing and screw on wing mounting creates a more stable platform to increase downforce to the rear wheels for more traction and stability.

Width: 249mm
Height: 148mm
Wheelbase: 277mm
Tread (F/R): F:221mm / R:201mm
Gear Ratio: 2.6:1
Weight: 1550g (approx.)


  • Unassembled kit
  • Clear body &wing
  • Wheels
  • X-GEAR ball diff grease, high graphite grease, shock springs

Needed to Complete:

  • 2-Channel Radio System
  • Steering servo
  • 1/10 ESC & Motor
  • Battery for chassis
  • Tires and Inserts
  • Battery Charger
  • Pinion Gear
  • Paint For Body
  • Tools

This product was added to our catalog on August 27, 2018

Verified Owner
Sunday, Sep 27 2020 (about 2 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
First to address others concerns. Yes there are plastic ball stud washers. Just purchase a few packs of TLR236010 and you have replaced every single plastic washer/spacer with hard anodized aluminum for about $10 with extras left for tuning. Now for the plastic shock caps, every other 1/10 buggy is including plastic shock caps at this point. If you want to upgrade, the Kyosho aluminum caps will cost about $32 for all four. There is a benefit to using the kit plastic ones though, and that is the fact they have bleeder screws which the aluminum do not. As a side note, all the shock caps on every other manufacturers kit will slop out. If you want to cure the issue, purchase RDRP0248 and the problem is solved. The lack of ball bearings in the steering rack to steering arm connection is no different than what Yokomo does and their car is $399. Do yourself a favor and purchase the Kyoshos o-ring style battery retention system. It is part number KYOUMW754 and costs $14.50. As a side note, the kit plastic servo arm has a lot of material making it rub on the bulkhead slightly with my servo choice (MKS shorty). I used the Associated 25 spline aluminum version #ASC1366 and problem solved. So now you have a total of around $288.50 into everything. Not to mention Kyosho does allow coupons to be used on their products. You just saved at least $65-$70 over a Associated B6.2D (which I also own). You can buy some nice accessories with that cash or buy a servo or whatever.
Fit and finish of parts, really nice. And the plastics are actually stronger than they look.
As for performance, it's actually surprisingly good. Better than my B6.2D out of the box. And you can feel tuning adjustments out on the track. This car has more rear grip in laydown configuration than my Associated cars have in layback configuration. And it feels better balanced than the TLR 22 5.0 in my opinion. It really is a great car when you drive it. Now Kyosho just needs a top name driver to place themselves back in the top spot of how consumers perceive the product. If you purchase one you will likely be happy with it.
Verified Owner
Sunday, Dec 6 2020 (about a year ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
Great buggy for the discounted price I bought it for. Great smooth operation of differential and suspension. Great engineering was put into this buggy. Definitely recommend.
Verified Owner
Saturday, Nov 28 2020 (about 2 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
i chose the RB7 with the expectation that the plastic shock towers and arms would make it pliant to tackle the bumpy track that's thwarted my other cars. Coupled with a short wheel base, the RB7 has delivered in spades.

Build quality is top notch, and those shocks truly are the smoothest, even with the red o-rings. Going at USD219, the RB7 really a no brainer.
Verified Owner
Sunday, Nov 15 2020 (about 2 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
Great handling buggy! Instruction could be better, otherwise building the kit was a pleasure.
Verified Owner
Wednesday, Sep 23 2020 (about 2 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
Fantastic build, as all Kyosho models are. Great upgrades and improvements over the RB6. Buggy is more capable, better control and more steering. Changes in the rear are much better. Easier access and more straightforward design. Plus, it’s hard to beat the price-point right now!
Monday, Aug 3 2020 (about 2 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
I purchased this kit for roughly $220 and, at that price, it's a bargain. I've been into RC for a while but I never had a two wheel drive buggy before. I built the kit, used a 17.5t HW Juststock motor/ESC with a 30t pinnion. Savox servo and JConcepts Ellipse tires all around. The first time I drove it was on a race day and I took 2nd place in the B-main which bumped me up to the A-main - that made me happy!

I'm sure the AE and TLR kits are "better" in some ways. But, there's nothing about the RB7 that I found to be annoying or terrible - I'm happy with it.

The only reason I'm not giving it five stars is because there are a few parts (mostly washers and spacers) that are made from plastic but probably would be better if they were aluminum.
Verified Owner
Saturday, Feb 15 2020 (about 2 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
Great kit..Fast postage...Just great...Thank you...……..
Saturday, Jul 13 2019 (about 3 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
Great chassis, handles extremely well. Huge lack of appealing body/covers for RB7 really need to bring back the Ultima RB5 Sword body.
Verified Owner
Tuesday, Jan 1 2019 (about 3 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
It’s an easy build like most 2wd buggies.
the Rb7 steering system is outdated with no bearings on the Ackerman bar, ae have added this feature since the B5 series.
it’s a fun and capable car running in stock class.
Didn’t have to add or reduce weight came in on point at 1500g
Didn’t come with a stock spur gear had to purchase separately.
Plastic ball stud shims and plastic shocks mountings are too cheap they are very sloppy and the ball studs don’t accept the 2mm wrench.
Although the rb7 is a Very stable vehicle on track just way overpriced for what you get in the box.
Thursday, Jan 31 2019 (about 3 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
Nice kit overall.

Thing is, the plastic tree parts are annoying as fak. Plastic washers and shock caps kinda suck. The slop in shock ends is beyond anything I've felt before. Has potential, kyosho needs to clean up some loose ends.

I guess trying to compare this to my Hot Bodies buggies isn't gonna happen, bang for buck there is no comparison. In kit quality and what you get in the box.
Sunday, Nov 11 2018 (about 4 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
The new RB7 is on point! Upgraded from a 6.6 and more than happy with the quality of the kit and performance of the car! Major improvements that make it a proper turf car.
Monday, Sep 10 2018 (about 4 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
This was my first kit build and I couldn't be happier. It went together easily without any snags along the way. Very high quality plastics and great instructions made this sweet build.

Can't go wrong with Kyosho and this won't be my last! ZX7 is next on my list!
Monday, Sep 7 2020 (about 2 years ago)
Kyosho Ultima RB7 1/10 2WD Electric Buggy Kit
I bought this from tower hobbies probably 6 months ago. its a good car at 219 dollars. but i think i paid 369 for it then. kind of a rip off at that price. the car comes with a ton of plastic parts that should be metal. My recommendation if you can live without the kyosho spend the extra hundred dollars and just get the B6.2