Make no mistake—both Kyosho and Team Associated have
a pair of highly capable buggies here, both very close in
performance while di;erent in “feel.” As RTR fun machines,
One is shop support; if your local track sells and supports one buggy but not the other, go with the car
that has parts on the wall. Assuming they’re equal in that regard, consider the specs. Despite costing $90
less than the RB6, the B4.2 includes aluminum shocks and a metal-gear servo versus plastic for the RB6.
But the RB6 includes an LCD-equipped radio that o;ers greater tuning ability. We’ll call the tires a wash
since you’re likely to replace them on either car once you dive into racing, but the B4.2 does have stickier
rubber out of the box—a plus on the track but a minus for long tire life in “bash mode.”
Do you feel yourself leaning one way or the other yet? If not, consider this: We found the Ultima easier
to go fast with, and in racing, how easily you can turn fast laps makes a big di;erence in winning races. Our
fastest laps with the B4.2 were faster than the fastest laps turned with the RB6, but the B4.2 requires
a more skilled touch. If that means you make more mistakes between the start and finish tones, those
Who Wins?
faster lap times aren’t going to matter. ;at said,
the B4 is fully adjustable, and there’s no reason it
can’t be tuned for mellower handling—but out of
the box, it’s an edgier machine.
“Yeah, yeah, yeah—but who wins?” you
ask. Tough call, and it may not be your call, but
we’re going with the RC10B4.2 for a very simple
reason: price. ;e $90 you’ll save with the B4.2
can cover two sets of race tires, and having
tire options will make a huge di;erence in your
potential for racing success. ;e B4 also puts up
a few nicer specs with its metal-gear servo and
aluminum shocks, which we appreciate. Also
appreciated is the RB6’s LCD-equipped radio, but
it’s not going to give you an edge on the track.
Now, if you like the RB6 better, get it. It’s a great
car, and if both RTRs were within $20 of each
other, we’d call this head-to-head a tie. But with
$90 separating the buggies, we’re giving the nod
to Team Associated’s RC10B4.2 RS. ✇
SOURCES
Kyosho kyoshoamerica.com
Team Associated teamassociated.com
MaxAmps maxamps.com
Pro-Line prolineracing.com
Kyosho Team Associated
Item no. AR102614 9042
Weight (without battery) 3 lb. 1 oz. (1387g) 2 lb. 11. 2 oz. (1226g)
Wheelbase 11. 6 in. (295mm) 10. 8 in. (273mm)
Width 9. 8 in. (249mm) 9. 8 in. (250mm)
Speed control Orion Vortex R10 45a Reedy SC500-Bl
Fan-cooled speed control? Yes Yes
Motor 2700Kv sensorless 3500Kv sensorless
Shocks Plastic Aluminum
Preload adjustment Clip Clip
Camber adjustment 2.9mm turnbuckle 2.9mm turnbuckle
Toe-in adjustment 2.9mm turnbuckle 2.9mm turnbuckle
Slipper clutch Dual-pad Dual-pad
Differential Bevel gear Bevel gear
Driveshafts Dogbones Dogbones
Transmission gears Plastic Plastic
Servo gears Plastic Metal
Servo torque (oz.-in.) 70 76
Transmitter/channels ( 2.4GHz) Syncro KT-201/2 XP 2. 4 GHz/2
Receiver channels 3 4
Water-resistant electronics? Yes Yes
Charger included? No No
Connector type Deans-style Deans-style
Price $340 $250
Get the Kyosho Ultima
RB6 RTR because:
› It’s easier to drive on a track.
› The track’s shop supports it
(check first!).
› You want its more-adjustable
radio system.
› You just plain like it better.
Get the Team
Associated RC10B4.2
RS RTR because:
› It posted the fastest lap times.
› The track’s shop supports it
(check first!).
› You want its aluminum shocks
and metal-gear servo.
› You want to save $90.