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- 4400 Bronco Body Licensed by both Ford and RTR.
- CNC aluminum center differential case, with 63T/1.0 module high strength steel spur gear.
- Impact-resistant one-piece PC body is fixed at multiple positions of the roll cage.
- Front and rear suspension are equipped with a total of 8pcs extra-long stroke aluminum shocks, matching with progressive springs.
- Driveshafts are made by fully-machined heavy duty steel.
- CNC aluminum lower front suspension block together with 4x110mm steel hinge pin.
- Compatible with 30kg class jumbo-size servo or 25kg class standard servo.
- Fully machined 33/13T spiral steel gear with modulus 1.25.
- CNC aluminum adjustable motor mount, option for 42-50 size motor. Highly realistic racing tires, equipped with 17mm hex wheel connectors.
- Completely new design aluminum main chassis and upper decker, create a new three-layer design, providing a much lower center of gravity and excellent handling characteristics.
Description
Ridge Racer U4 - 1:7 Scale Offroad Desert Buggy
In the vast expanse of the desert, every inch of terrain is your battleground, every sprint is a challenge to your limits. Get ready to embark on a new adventure! Introducing the Ridge Racer U4 - 1:7 Scale Brushless Offroad Desert Buggy, your ultimate tool for desert exploration!
The Ridge Racer U4 is our first 1:7 scale model, offering a large size that brings a whole new desert adventure experience. Whether tackling desert hills or conquering sand dunes, this buggy will be your perfect companion.
Different from before, the Ridge Racer U4 features the latest brushless technology, providing you with unparalleled power and speed. Feel the rush as gravel splashes under the wheels!
What's in the box:
- 1 x 1:7 Ridge Racer U4 RS
- 1 x 2.4G Transmitter + Receiver (installed)
- 1 x Brushless Motor 4274 1600KV (installed)
- 1 x Brushless 150A ESC (installed)
- 1 x Bronco Logo sticker
- 1 x Product Manual
Need to Complete:
- 4 x AA Batteries for Transmitter
- Battery & Charger for Kit (Recommended 3S Lipo 11.1V 7200mAh 60C With EC5 Connector x2)
- 6S Battery: For speed lovers, pair 1:7 Ridge Racer U4 with 6S battery for high-speed thrills up to 50 mph.
- 4S Battery: For superior control, choose a 4S battery for your RC car's precision handling.
Notes To Buyer:
- This product consists of precision components and is not a toy. It is not suitable for individuals under the age of 14.
- This product can reach speeds up to 80 km/h. Please use it only in open and unoccupied areas.
Specification:
Length | 640mm |
Width | 379mm |
Height | 275mm |
Wheelbase | 425mm |
Tire F/R | Φ 145*56mm |
Weight | 5.9KG |
ESC | 150A |
Motor | 4274 1600KV |
Battery Box Size | 181*47.5MM |
Drivetrain | 4WD |
Speed | Up to 80km/h |
Radio Control | 2.4GHz 5-Channel Remote with 3-Axis Gyroscope |
Suspension | Independent Front Suspension With A Solid-Axle |
Gear ratio | 11T Pinion Gear11T : 1:14.55 12T Pinion Gear12T :1:13.34 13T Pinion Gear13T : 1:12.31 |
Features
Powerful Off-Road Performance
The Ridge Racer is an off-road beast, built to jump, drift, rock crawl, and conquer it all. Dominate any terrain with ease and experience the thrill of pure speed.
Speed Up To 50 MPH
With a 6S battery, this Desert Buggy can speed up to 50 MPH. The brushless 150A ESC and 4274 1600KV motor provide unmatched acceleration and control for off-road performance.
Responsive Steering with Gyroscope
Equipped with a 30KG high-torque servo and a built-in 3-axis gyroscope, this vehicle delivers improved high-speed steering performance, offering stability and adjustable sensitivity for precise control.
Durable And Lightweight Aluminum Chassis
The Ridge Racer features a robust aluminum chassis designed to withstand high-impact shocks. Critical parts, including oil-filled shocks, links, and gears, are all crafted from durable metal for enhanced performance and longevity.
Independent Front Suspension With A Solid Rear Axle
Designed for superior shock absorption, this setup ensures a perfect balance of off-road performance and stability at high speeds.
Licensed Bronco Body
The 4400 Bronco body is officially licensed by both Ford and RTR, featuring a fully detailed cockpit, realistic spare tire, and functional spotlights and headlights.
Excellent Shock Absorption
Equipped with eight metal shocks (4 threaded coil-over shocks + 4 auxiliary dampers) for improved adjustability, performance, and durability on any terrain.
Large 145mm Wheels
The semi-hard, scale tires deliver great durability and handling for high-speed cornering, drifting, and slides. The larger wheels also enhance crawling ability, outperforming standard short-course trucks.
Videos
More Videos Please Go To Our Youtube Channel: FMS Model





Parts
1:7 Ridge Racer U4 Brushless Motor 4274
1:7 Ridge Racer U4 Adjustable Turnbuckle Set
1:7 Ridge Racer U4 Universal CVD Front
1:7 Ridge Racer U4 Driveshaft for Rear Portal
1:7 Ridge Racer U4 Rear Portal Housing
1:7 Ridge Racer U4 Front Upper Suspension Arm
Manual & Support
Description
Ridge Racer U4 - 1:7 Scale Offroad Desert Buggy
In the vast expanse of the desert, every inch of terrain is your battleground, every sprint is a challenge to your limits. Get ready to embark on a new adventure! Introducing the Ridge Racer U4 - 1:7 Scale Brushless Offroad Desert Buggy, your ultimate tool for desert exploration!
The Ridge Racer U4 is our first 1:7 scale model, offering a large size that brings a whole new desert adventure experience. Whether tackling desert hills or conquering sand dunes, this buggy will be your perfect companion.
Different from before, the Ridge Racer U4 features the latest brushless technology, providing you with unparalleled power and speed. Feel the rush as gravel splashes under the wheels!
What's in the box:
- 1 x 1:7 Ridge Racer U4 RS
- 1 x 2.4G Transmitter + Receiver (installed)
- 1 x Brushless Motor 4274 1600KV (installed)
- 1 x Brushless 150A ESC (installed)
- 1 x Bronco Logo sticker
- 1 x Product Manual
Need to Complete:
- 4 x AA Batteries for Transmitter
- Battery & Charger for Kit (Recommended 3S Lipo 11.1V 7200mAh 60C With EC5 Connector x2)
- 6S Battery: For speed lovers, pair 1:7 Ridge Racer U4 with 6S battery for high-speed thrills up to 50 mph.
- 4S Battery: For superior control, choose a 4S battery for your RC car's precision handling.
Notes To Buyer:
- This product consists of precision components and is not a toy. It is not suitable for individuals under the age of 14.
- This product can reach speeds up to 80 km/h. Please use it only in open and unoccupied areas.
Specification:
Length | 640mm |
Width | 379mm |
Height | 275mm |
Wheelbase | 425mm |
Tire F/R | Φ 145*56mm |
Weight | 5.9KG |
ESC | 150A |
Motor | 4274 1600KV |
Battery Box Size | 181*47.5MM |
Drivetrain | 4WD |
Speed | Up to 80km/h |
Radio Control | 2.4GHz 5-Channel Remote with 3-Axis Gyroscope |
Suspension | Independent Front Suspension With A Solid-Axle |
Gear ratio | 11T Pinion Gear11T : 1:14.55 12T Pinion Gear12T :1:13.34 13T Pinion Gear13T : 1:12.31 |
Features
Powerful Off-Road Performance
The Ridge Racer is an off-road beast, built to jump, drift, rock crawl, and conquer it all. Dominate any terrain with ease and experience the thrill of pure speed.
Speed Up To 50 MPH
With a 6S battery, this Desert Buggy can speed up to 50 MPH. The brushless 150A ESC and 4274 1600KV motor provide unmatched acceleration and control for off-road performance.
Responsive Steering with Gyroscope
Equipped with a 30KG high-torque servo and a built-in 3-axis gyroscope, this vehicle delivers improved high-speed steering performance, offering stability and adjustable sensitivity for precise control.
Durable And Lightweight Aluminum Chassis
The Ridge Racer features a robust aluminum chassis designed to withstand high-impact shocks. Critical parts, including oil-filled shocks, links, and gears, are all crafted from durable metal for enhanced performance and longevity.
Independent Front Suspension With A Solid Rear Axle
Designed for superior shock absorption, this setup ensures a perfect balance of off-road performance and stability at high speeds.
Licensed Bronco Body
The 4400 Bronco body is officially licensed by both Ford and RTR, featuring a fully detailed cockpit, realistic spare tire, and functional spotlights and headlights.
Excellent Shock Absorption
Equipped with eight metal shocks (4 threaded coil-over shocks + 4 auxiliary dampers) for improved adjustability, performance, and durability on any terrain.
Large 145mm Wheels
The semi-hard, scale tires deliver great durability and handling for high-speed cornering, drifting, and slides. The larger wheels also enhance crawling ability, outperforming standard short-course trucks.
Videos
Parts
1:7 Ridge Racer U4 Brushless Motor 4274
1:7 Ridge Racer U4 Adjustable Turnbuckle Set
1:7 Ridge Racer U4 Universal CVD Front
1:7 Ridge Racer U4 Driveshaft for Rear Portal
1:7 Ridge Racer U4 Rear Portal Housing
1:7 Ridge Racer U4 Front Upper Suspension Arm
Manual & Support
ROCHOBBY 1:7 Ridge Racer U4 Desert Buggy RS
ROCHOBBY 1:7 Ridge Racer U4 Desert Buggy RS
SKU: ROC10701RSBU
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- Ridge Racer Specials:
① Earn 1100 Points ② All Parts are Available
- This product is RS (Ready Set) version and doesn't include battery & charger. It can only be shipped to the Contiguous U.S.
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🚚Shipping Fee
• Free Shipping on orders over $99
• $15 Shipping Fee on orders under $99
⏰Shipping Time
• RC Airplanes: 3-7 working days from the US warehouse
• RC Cars: 3-7 working days from the US warehouse; 10-15 days from the Chinese warehouse
• Parts & Accessories: 3-7 working days from the US warehouse; 10-15 days from the Chinese warehouse
👉🏻 Learn more about the Shipping Policy
We offer a 30-day return policy for new and unused products purchased directly from www.fmshobby.com, which can be returned for a refund or credit. This policy covers items that are defective or DOA (Dead On Arrival), as well as those that have shipping damage, loss, or missing parts.
👉🏻 Learn more about the Return Policy
Electronic accessories have a 90-day warranty from the date of delivery. At the same time, the customer is entitled to long-term official technician support.
👉🏻 Learn more about Warranty Policy
Absolutely amazing this thing rips on 6S I can’t believe it. I took it to the beach by the dunes and was sending this thing 30 to 40 feet in the air multiple time , very satisfied 10 out of 10 purchase along away with FMS I have not been let down yet
My father and I both have UDRs. I am thinking about getting one of these for my brother so we can review vs the UDRs on our youtube channel SimmsRacing96.
Really good quality! Handles rough Terrain steers incredibly, very adorable. Controls easy to use.
Guys I been racing Losi Super Baja Reys, Rock Reys and DBXLE"S for years and they are a soup sandwich out the box. You have to go over every screw and ensure they are tight. So, with that tradition I went over this rig and it was perfect. In my videos i have run 4 packs without failure. I added some wider prolines and installed 1/8 17mm hex's that were 10mm wider. Going from front side to side it was 15 inches, the hex's and prolines widened it to 16.25 inches. It handled awesome before.... No its epic even in the grass! Enjoy. I just ordered a blue one to match my red one!!

This is a great truck for dessert terrain, and any terrain in general, has the 3s and 6s option for a lot more speed and is extremelydurable.