Buying Link: YK4107 PRO
Brushless Power for Your Next Trail
The YK4107 PRO features a 2100KV brushless outrunner motor paired with a 60A electronic speed controller. Its two-speed transmission adds flexibility for different sections of a trail.
In crawling, how you apply the throttle matters. A gradual input gives you time to watch the tyres, judge grip and adjust your approach as the vehicle meets an obstacle.
That makes every climb an exercise in control, with the driver playing as much a part as the machine.
Dual Speed for Crawling and Exploring
The remotely selectable high and low gears let you adapt the drivetrain as the route changes.
Low gear is useful for deliberate obstacle work, where small movements help you place the wheels accurately. High gear gives you a faster pace for connecting trail sections.
Try approaching a rocky step slowly, checking where the front tyres meet the surface and keeping your inputs measured as the rear wheels follow.
Differential Locks Put Traction Control in Your Hands
The YK4107 PRO includes remote-controlled front and rear differential locks. Locking a differential couples the wheels on that axle, helping maintain drive when available grip differs between the two sides.
This adds another decision to technical driving. You can assess the surface, select the appropriate setting and see how the vehicle responds.
A challenging section becomes an opportunity to learn about traction, steering and vehicle positioning.
A 25KG Metal Gear Steering Servo
Steering becomes demanding when crawler tyres push against rocks or other obstacles.
The YK4107 PRO uses a 25KG-rated metal-gear steering servo with buffer protection. The rating refers to servo torque, rather than the vehicle’s carrying capacity.
On the trail, accurate positioning still matters. Giving the tyres room to turn and adjusting your approach can help you negotiate an obstacle without forcing the steering against it.
Portal Axles and a Low Centre of Gravity Chassis
The crawler combines front and rear portal axles with a low centre of gravity chassis. Listed ground clearance is approximately 65 mm, with a 325 mm wheelbase.
Portal axles provide clearance beneath the axle housings, while a lower centre of gravity helps manage stability. Your chosen line remains important, especially when crossing slopes or approaching uneven ledges.
Start with manageable obstacles and build familiarity with the vehicle’s balance.
Metal Gears and Scale Details
Metal drivetrain gears, oil-filled metal shocks, remotely operated lighting and a 10-channel radio system round out the feature list. The model also includes a tank-turn function intended to assist with tight manoeuvres.
These functions give enthusiasts plenty to explore, from adjusting their driving technique to learning how different controls affect the crawler’s behaviour.
Before Your First Drive
The standard listing excludes the drive battery and charger. Confirm the supplied package, compatible battery dimensions, connector and charging requirements before ordering.
For your first session, choose an accessible route with space to recover the vehicle. Practise steering, gear selection and differential controls before moving onto more demanding terrain.
Looking for the YIKONG YK4107 PRO in India?
Interested in adding a 1:10 scale brushless RC rock crawler to your collection?
Speak with MRC Hobbies about the YIKONG YK4107 PRO, current pricing, availability and a suitable battery and charger setup.
Call / WhatsApp: +91 77840 93093
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Email: contact.mrchobbies@gmail.com
Website: mrchobbies.com
Rocky climbs, woodland trails or a dedicated crawling track—where would you take the YK4107 PRO first?