Product details

Description

🏔️ Overview

The BF-4J is a professional-grade 1/10 scale 4WD rock crawler built for extreme off-road adventures. Featuring a two-speed transmission, front/center/rear diff lockers, and link suspension for maximum articulation, this crawler conquers the toughest terrain with ease. With over 10% larger size than most trail crawlers and a blend of semi-scale looks with reliable chassis platform, the BF-4J delivers unmatched climbing performance and realistic trail experience.

📦 In the Box

  • 1 x 1/10 BF-4J Crawler RTR
  • 1 x 2.4GHz Transmitter and Receiver Set
  • 1 x 7.2V 1800mAh NiMH Battery
  • 1 x Wall Charger
  • 1 x Instruction Manual

🔧 Needed to Complete

  • 4 x AA Batteries for the transmitter

📊 Technical Specifications

Scale 1:10 Vehicle Type 4WD Rock Crawler
Dimensions (L×W×H) 22.05" × 12.01" × 11.3"
(560mm × 305mm × 287mm)
Wheelbase 13.39" (340mm)
Motor 540-60T High-Torque Brushed ESC 40A Waterproof Crawler ESC
Radio System FlySky 2.4GHz 5CH Top Speed 35+ km/h
Battery 7.2V 1800mAh NiMH (Included) Charger Balance Charger
Servos 9kg Waterproof Steering Shock Type Oil-Filled Adjustable
Drive Type 4WD (Forward/Brake/Reverse) Gear Ratio 36.2:1
Tyre Size 145 × 65mm Connector Type Deans Plug
Run Time 15-20 minutes per cycle Charging Time 3.5-4 hours
Gear Pitch 0.6 MOD Spur Gear 70T

⚡ Premium Features

Power & Control

✓ 540-60T High-Torque Brushed Motor

✓ 40A Waterproof Crawler ESC

✓ FlySky 2.4GHz 5CH Radio System

✓ 9kg Waterproof Steering Servo

✓ 7.2V 1800mAh NiMH Battery (Included)

✓ 99% Ready-To-Run

Drivetrain & Transmission

✓ Two-Speed Center Compact 3-Gear Transmission

✓ Front, Center & Rear Diff Lockers

✓ Front and Rear Straight Locked Axles

✓ Metal Output, Crown and Diff Gears

✓ Front CVA Steering Universal Driveshafts

✓ Telescopic Sliding Center Driveshafts

Suspension & Chassis

✓ Link Suspension for Maximum Articulation

✓ Oil-Filled Adjustable Shock Absorbers

✓ Independent Suspension System

✓ Aluminum Front/Rear Bumper & Body Mounts

Design & Details

✓ Scale-Inspired Trail Style Body Shell

✓ Molded Fenders, Roof Rack & Light Bar

✓ Molded Bumpers with Tow Hooks

✓ Scale Styled Wheels with Super Soft Block Pattern Tyres

✓ Over 10% Larger Than Most Trail Crawlers

✓ Semi-Scale Looks with Reliable Chassis Platform

🔍 Product Details

Wheels and Tyres

Scale Wheels and Super Soft Tyres

Super soft aggressive lug pattern tyres are mounted to scale style wheels for a realistic finish. With a blend of semi-scale looks, reliable chassis platform and over 10% bigger size than most trail crawlers, the BF-4J delivers exceptional grip and climbing performance on any terrain.

High-Torque Transmission and Motor

The high torque 60T brushed motor drives a rugged, all metal output pinion, crown and transmission gears for extra reliability. Front universal CVA driveshafts and center telescopic sliding shafts keep the power connected to all wheels through high clearance front and rear locked axles.

Transmission
Shock Absorbers

Oil-Filled Adjustable Shock Absorbers

Oil filled, threaded body shocks handle each corner and the huge axle articulation. These professional-grade shocks provide consistent damping and can be adjusted to suit different terrain conditions, ensuring maximum traction and stability during extreme crawling.

9kg Waterproof Steering Servo

Due to the demands of crawling, the car comes with a 9kg waterproof steering servo to help navigate your crawler through the roughest of terrains. This high-torque servo provides precise control and reliable performance in all weather conditions.

9kg Servo

📸 Photo Gallery

Our action-shot gallery showcases the VRX Racing BF-4J Crawler dominating diverse terrain. Feel the adrenaline of extreme rock crawling, technical trail navigation, and massive articulation—all captured in dynamic real-world environments.

Action Shot 1 Action Shot 2 Action Shot 3
Action Shot 4 Action Shot 5 Action Shot 6

FAQs

Please read our FAQs page to find out more.

Product Information

Q: What types of RC model cars do you offer?

A: We provide a wide range of RC model cars, including off-road buggies, rock crawlers, drift cars, nitro rc ,and high-speed racing models. Our products are suitable for beginners to advanced enthusiasts. 

Q: Are your RC cars ready-to-run (RTR) or kits?

A: We offer both RTR models (including everything needed to start) and assembly kits for DIY enthusiasts. Product descriptions specify the type for each item. 

Q: What is the average battery life and charging time? 

A: Battery life varies by model (typically 10-30 minutes per charge). Charging time ranges from 3-4 hours depending on the battery type (Li-Po/Ni-MH) and charger specifications. 

Q: Are spare parts available? 

A: Yes, we provide a full range of spare parts (e.g., tires, motors, batteries, chassis). Use the search bar or browse the "Spare Parts" category. 

Ordering & Payment

Ordering & Payment

Q: How can I place an order?

A: Add items to your cart, proceed to checkout, and enter your shipping/payment details. You will receive an order confirmation email instantly. 

Q: What payment methods do you accept? 

A: We accept credit/debit cards (Visa, MasterCard), PayPal, and bank transfers (for bulk orders). 

Q: Can I modify or cancel my order after placement?

A: Orders can be modified or cancelled within 24 hours via customer service.

Shipping & Delivery

Shipping & Delivery

Q: What shipping options are available? 

A: We offer express shipping (UPS/DHL, 6-10 days), standard air freight (10-20 days), and economy sea freight (30-60 days). Costs and times vary by destination. 

Q: Do you ship worldwide?

A: Yes, we ship globally. Shipping costs and delivery times depend on the destination country. 

Q: How can I track my order?

A: A tracking number will be emailed once your order is shipped. Use it on the carrier’s website for real-time updates. 

Technical Support

Technical Support

Q: How do I troubleshoot connectivity issues?

A: Ensure the transmitter and receiver are paired correctly (see the manual). Replace batteries/charge the transmitter and RC car fully. 

Q: Can I upgrade my RC car’s components?

A: Yes! We offer compatible upgrades (e.g., high-speed motors, alloy parts). Check the "Upgrades & Accessories" category for options. 

Q: Where can I find user manuals?

A: Manuals are available for download under the "Support" section of our website. Physical copies are included with every purchase. 

Returns & Warranty

Returns & Warranty

Q: What is your return policy?

A: We accept returns within 30 days of delivery for unused/unopened items. Return shipping costs are borne by the customer unless the item is defective. 

Q: Do your products come with a warranty?

A: Yes, all RC cars include a 6-month manufacturer’s warranty covering defects in materials/workmanship. Warranty details are included in the product packaging. 

Q: How do I claim warranty support?

A: Contact our support team with your order number and a description of the issue. We will guide you through the process. 

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