The faster tougher design of the ARRMA SENTON 4X4 MEGA 550 Short Course Truck amplifies your racing thrills as only ARRMA can The ARRMA design team has loaded this RC short track RC truck with every advantage a new driver could want — 1/10 scale realism ready-to-run simplicity and 30+ mph speed potential with full-time 4 Wheel Drive traction and power. Start with the recommended NiMH battery pack or upgrade to a 2S LiPo to take the speed run time and excitement to a whole new level.

ARRMA 1/10 SENTON 4x4 MEGA 550 BRUSHED SHORT COURSE TRUCK RTR, RED, ARA4203XV3T1



Overview

The best short course RC truck for first-time bashing through amplified all-road blasting is the ARRMA SENTON 4X4 MEGA 550 RTR. Though easy to drive, affordably priced, and ready-to-run — its aggressive 1/10 scale styling hints at high-speed excitement that’s ahead. Speeds of 30+ mph are achievable under optimum conditions. From its full-time 4WD transmission to the large diff gears, every part of the ARRMA SENTON 4X4 MEGA 550 has been engineered by the ARRMA design team of RC enthusiasts to survive brutal blasting. The remote control short course truck’s smooth handling has you looking like a winner right off the starting line, and its wide wheelbase and vented tires let you put the hammer down on nearly any off-road or paved surface. An innovative modular chassis simplifies maintenance and repairs, cutting down time to the bone. The included Spektrum radio lets you limit top speeds to 50% or 75% of full throttle until you’re ready for it all, and its ergonomic grip fits your hand like a glove. ARRMA recommends a high capacity NiMH battery. You can also upgrade easily to 2S LiPo power to take your RC 4x4 fun to the next level. Fully assembled and ready-to-run, the ARRMA SENTON 4X4 MEGA 550 Brushed RTR just needs batteries and a charger before you’re ready to make your move!

Features

  • Stronger chassis and retained hinge pin plates
  • Steering with more clearance for stones
  • Castellated slipper pad and sliding gear mesh
  • 23T Spline servo saver
  • Brushless-ready 37T 1.35Mod diffs with silicone O-rings
  • Power Module with sliding gear mesh and improved dirt management
  • Rubber shielded bearings throughout
  • Oil-filled shocks with silicone O-rings
  • MEGA 12T brushed 550 motor
  • MEGA waterproof* ESC
    * Note: For details on waterproof standards, refer to the instruction manual
  • IC3™ connectors (EC3™) compatible
  • Signature easy-access modular design
    • Easy-access power module
    • Easy-access electronics module
    • Easy-access diff module removal front and rear
  • Double wishbone suspension front and rear
  • Metal-geared differentials
  • Adjustable ride height
  • Adjustable body mounts
  • Extended height dirt defenders
  • Multi-terrain dBoots® Fortress™ SC tires
  • Tough multi-spoke black wheels
  • 2-year limited warranty (see website for details)
  • 30MPH (48km/h) speed achievable in optimum driving conditions with optional gearing
Spektrum™ 3-Channel SLT3™ 2.4GHz radio and SLR300 Waterproof* Receiver
Spektrum™ 3-Channel SLT3™ 2.4GHz radio and SLR300 Waterproof* Receiver

  • Fast response SLT™ protocol
  • Foam wheel
  • Improved grip and trigger feel
  • Improved wheel and trigger force
  • 2-way thumb switch third channel
  • 50% and 75% Throttle mode (for beginners)
  • Tactic® SLT™ receiver compatible

 

Metal-geared differentials
Metal-geared differentials

  • Large gears can withstand huge torque, and internal metal gears have been chosen for reliability during extreme bashing.
  • Easy-access front and rear diff module removal.

 

Spektrum SPMS650 digital servo
Spektrum™ SPMS650 digital servo

  • 84 oz-in (6 kg-cm) @ 6V
  • 20% more torque than the previous ADS-5 servo for improved steering feel
  • Waterproof*
* Note: For details on waterproof standards, refer to the instruction manual

 

Strengthened Chassis
Strengthened Chassis

Stronger chassis and retained hinge pin plates

 

Larger pull tab on power module
Larger pull tab on power module

 

Castellated slipper pad and sliding gear mesh
Castellated slipper pad and sliding gear mesh

 

Rubber shielded bearings
Rubber shielded bearings

 

Redesigned Steering
Redesigned Steering

Steering with more clearance for stones.

 

Tougher brushless ready transmission
Tougher brushless ready transmission

Metal input spline moulded into composite gear. Same gears as the ARRMA 4S.

 

Sealed Wheels & Vented Tires
Sealed Wheels & Vented Tires

Stops dirt getting in and allows water to escape.

 

Multi-terrain dBoots Fortress MT tires
Multi-terrain dBoots® Fortress™ MT tires

Tough, multi-spoke black MT wheels with dBoots® Fortress™ MT tires give the GRANITE™ 4X4 MEGA RTR effective traction for bashing on almost any terrain.

 

Silicone O-rings
Silicone O-rings

Oil-filled shocks with silicone O-rings

 

Heavy-Duty Bumpers
Heavy-Duty Bumpers

Impact absorbing.

 

Proven Power Package
Proven Power Package

  • MEGA 12T brushed 550 motor
  • MEGA waterproof* ESC
    * Note: For details on waterproof standards, refer to the instruction manual
  • IC3™ connectors (EC3™) compatible

 

Easy-access power module
Easy-access power module

  • Detaches from chassis as a complete unit by removing one screw.
  • Contains motor, motor plate, slipper clutch assembly and gear cover.

 

Easy-access electronics module
Easy-access electronics module

  • Two-piece molding screwed to the chassis contains a waterproof receiver box, servo mount, and ESC tray.
  • Receiver mounts inside sealed module for protection from dirt and moisture.
  • ESC screws to the top for easy maintenance and switch access.
  • Servo mounts on the side for quick servicing.

 

Proven tough composite shock towers
Proven tough composite shock towers

 

Item Condition

All items sold by Horizon Hobby are sold as "New: A brand-new, unused, unopened, undamaged item." We do not sell used, opened, or damaged items. If an item is damaged during shipping, please see our Returns section to arrange a return.

Shipping

Horizon Hobby ships to all 50 States as well as Puerto Rico, Virgin Islands, and other US protectorates. Unfortunately, we cannot ship to APO/FPO or PO Box addresses at this time. Some restrictions apply based on destination and item size.

Our FREE shipping and combined shipping discounts save you money. We offer FREE economy shipping on US orders of $15 or more! Only $2.99 or $9.99 for economy service on US orders under $15.

We cannot combine shipping on multiple orders. We can combine multiple items if you use the shopping cart. You will also receive free shipping on all orders over $15 with a discount applied in the eBay shopping cart (applies to contiguous US orders only).

We ship out of our two warehouses in the United States located in Illinois and California. We will ship your order from the closest warehouse with inventory. Shipping times may vary based on shipping location. Hawaii orders will take 30-45 days for economy shipping.

ORM-D and Lithium / Li-Po Battery Restrictions

ORM-D items can only be shipped via ground delivery. Products of this nature include quarts of fuel, glues, paints, thinners, aerosol sprays, and certain lithium batteries. We cannot ship ORM-D items to Alaska, Hawaii, Puerto Rico, or other US Protectorates. Other restrictions may apply based on APO/FPO shipping rules.

Payment

We accept all major credit cards, PayPal, and Google Pay.

Taxes may be applicable at checkout. Learn More

Returns

Returned merchandise must be in unused condition and in its original packaging. The mounting of engines and accessories, running fuel through engines, cutting or pushing out the balsa sheets in kits, and other similar actions constitutes used merchandise. Radios must be returned with unmounted servos and switch harness.

We do not accept returns on Lithium-based batteries sold separate from a kit (i.e.: standalone) or Nickel or Alkaline batteries which have been opened, used and / or charged, due to an abundance of caution and care for our customers. Shipping conditions and parameters for batteries are particularly sensitive.

Flammable or combustible materials or products (regardless of whether the item is open or unopened) such as: Nitro engines (if fuel has entered the engine), Nitro fuel, Unopened as well as opened, charged and / or used Lithium Ion / Polymer (LiPo) batteries and other Lithium-based batteries. Any type of opened, charged and / or used battery including LiPo, Nickel-Metal Hydride (NiMH), Nickel-Cadmium (NiCd), other Nickel-based batteries and / or Alkaline-based batteries. Sealed Lead Acid batteries. Paints, thinners, certain glues or cements/pastes. Aerosols or compressed gas canisters. Rockets, kits containing rockets with or without igniters, igniters, hobby fuel (both quart or gallon).

When packing your order for return, please be sure all the original packing material and instruction papers and/or manuals are included. We will be unable to process your return if parts are missing, or if items are not packed properly to avoid damage to products and their boxes and/or packages. ARF kits are specially packaged to insure safe shipping of all contents. In order to receive credit for a returned ARF, the contents must be returned in the original plastic covers and arranged in a manner that will not damage the contents or packaging.

Please contact us for a return authorization number by opening a return case on Ebay. Freight charges will not be refunded. The customer is responsible for insured shipping back to our shop.

Returns sent COD will not be accepted.

Horizon Hobby reserves the right to charge a 15% restocking fee on any merchandise returned for credit.

About Horizon Hobby

Providing an exceptional customer experience is a mission we take seriously. That's why, when it comes to radio control (RC) fun, we don't toy around. Our advances in model aircraft and vehicle stabilization, 2.4GHz control and ready-to-run convenience have made RC hobbies more exciting and more accessible than ever before.

More importantly, we love RC just as much as our customers do. That's why we don't buy off-the-shelf product and slap our name on it. Any product that bears the Horizon Hobby name was developed by a team of in-house experts, many of whom have decades of experience in the hobby.

But our commitment to a great experience doesn't stop at the drawing board. Every Horizon Hobby product is backed by the best customer service you will find in any industry. Customer phone support, warranty repairs, online resources – we do it all and with the same passion for excellence we started with back in 1985.

Horizon Hobby Headquarters

Horizon employs nearly 700 people and sells products in more than 100 countries around the world. Corporate headquarters, along with the main distribution facility and product service center, are located in Champaign, Illinois. Additional distribution centers are located in Ontario, California and Barsbüttel, Germany (site of Horizon Hobby GmbH). California is also home to the Losi RC car division (Ontario) and the Athearn train line in Long Beach.

At Horizon Hobby, we help people have fun with hobbies. Providing an exceptional customer experience is a mission we take seriously. That's why, when it comes to radio control fun, we don't mess around.

Please contact us through your original purchase on eBay. We're always striving to answer e-mails as quickly as possible.

Great products. Exceptional service. Serious fun.