marvi - thanks for the info. The one that I was looking at was the Raybrig NSX 2002.
It has the following hop-ups
Double-deck frame of chassis features carbon reinforced resin lower deck and full carbon upper deck for increased durability. Chassis employs 2-belt 4WD with a full set of ball bearings as well as ball differential gears for maximum drive efficiency. With a full array of option parts and suspension that can be fine-tuned, this R/C chassis stays true to pure racing.
Option Parts List
Carbon Reinforced Resin Lower Deck
Fluorine Coated TRF Dampers
Aluminum Rear Bulkhead Beam
Aluminum Servo Stay
Torque Rod
Universal Shaft
Urethane Bumper
53284 5mm Aluminum Ball Connector
53433 Medium-Narrow Tires Type A
53434 Medium-Narrow Soft Inner
53436 TA04 Ball Differential Unit
53437 TA04 Aluminum Motor Heat Sink
53440 On-Road Tuned Hard Spring Set
53441 TA04 Color Stabilizer (Front)
53442 TA04 Color Stabilizer (Rear)
53448 4mm Hard Lock-Nut & Spacer Set
53452 TA04 Aluminum Hub for Spur Gear
53458 TA04 Racing Hub Carrier Set
53472 TA04 Toe-In Rear Uprights
53463 TA04 Low Friction Belt (Front)
53464 TA04 Low Friction Belt (Rear)
53465 TA04 Carbon Upper Deck
Full Bearing Set
*F/R Upper Arm, Steering Rod, Steering Linkage, and Torque Rod all use Turnbuckle Shaft.
What do the 414M go for?