
( Brand: Emtek ), ( Manufacturer Part Number: 84174.RCBUS4.SMUS4 ), ( Part Type: Bar Stem Pull Bra ), ( UPC: 840392523134 )
The **Emtek 84174 RCBus4 SMUS4 Select Bar 54 C-C Rect Stem** is a meticulously engineered, high-performance component designed for advanced radio-controlled (RC) car enthusiasts seeking precision, durability, and customization in their vehicle s suspension system. This stem is part of Emtek s **RCBus4** series, a line of components specifically crafted for off-road and high-performance RC trucks, offering superior strength and adaptability for demanding terrains. The **SMUS4** designation indicates its compatibility with Emtek s **Select Bar** system, a modular suspension framework that allows for effortless adjustments in camber, caster, and toe settings, enabling drivers to fine-tune their vehicle s handling characteristics with minimal effort. The **54-degree C-C Rect Stem** itself features a **rectangular cross-section**, providing enhanced rigidity and resistance to bending under heavy loads, while the **C-C (center-to-center) mounting** ensures precise alignment with the chassis, reducing play and improving overall stability. Constructed from high-grade aluminum alloy, this stem is lightweight yet exceptionally robust, capable of withstanding the stresses of aggressive driving, rock crawling, and high-speed off-road maneuvers. Its **selectable bar system** allows for quick swaps between different suspension geometries, making it an ideal choice for racers who need to adapt their setup for various tracks or conditions without extensive modifications. Whether paired with a **4-bar linkage** for extreme camber control or integrated into a **5-bar or 6-bar system** for smoother articulation, this stem delivers unmatched versatility and performance. The **rectangular design** also minimizes fatigue over time, ensuring longevity even under prolonged use, while its clean, streamlined profile contributes to an aesthetic appeal that complements modern RC builds. Perfect for both competitive racers and hobbyists looking to elevate their vehicle s capabilities, the Emtek 84174 RCBus4 SMUS4 Select Bar 54 C-C Rect Stem is a testament to Emtek s commitment to innovation and precision engineering in the world of RC suspension technology.
### **Pros and Cons of buying a Emtek 84174 RC Bus (RCBus4, SMUS4, Select Bar 54, C-C Rect Stem)**
#### **Pros:**1. **High-Quality Construction** The Emtek 84174 is known for its durable plastic body and robust chassis, making it suitable for both indoor and outdoor use. The reinforced structure helps withstand minor impacts and rough handling.
2. **Good Suspension System** The vehicle features a **SMUS4 (Soft Magnetic Universal Suspension 4)** setup, which provides a smoother ride compared to basic rubber-band suspensions. This improves stability, especially on uneven surfaces.
3. **Select Bar 54 (54-Position Gear Ratio)** The **Select Bar 54** allows for precise gear adjustments, giving the driver flexibility in speed and torque control. This is particularly useful for beginners learning to manage power delivery or for experienced users fine-tuning performance.
4. **C-C Rect Stem (Center-to-Center Rectangular Stem)** The **C-C Rect Stem** is a more stable and durable steering mechanism compared to traditional stems. It reduces wobble and improves handling, making the bus easier to control at higher speeds.
5. **Compatibility with Emtek s Ecosystem** If you already own other Emtek RC vehicles or accessories, this bus integrates well with Emtek s motor, battery, and controller systems, reducing the need for third-party parts.
6. **Beginner-Friendly** The bus is designed with moderate power output, making it suitable for new remote control enthusiasts who want a reliable, easy-to-operate vehicle without overwhelming complexity.
7. **Affordable Price** Compared to high-end RC buses, the Emtek 84174 offers a good balance between cost and performance, making it a budget-friendly option for those who want a functional remote control vehicle.
8. **Easy to Modify** The bus can be upgraded with aftermarket parts such as stronger motors, better batteries, or enhanced suspension for improved performance.
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#### **Cons:**1. **Limited Off-Road Capability** While the **SMUS4** suspension improves ride quality, it is not as rugged as specialized off-road suspensions (e.g., those found in Emtek s XT or XT2 series). It may struggle on very rough terrain or steep inclines.
2. **Basic Power Output** The stock motor and battery setup may not provide enough power for aggressive driving or extended use without modifications. Users looking for high-speed performance may need to upgrade components.
3. **Plastic Body Durability Concerns** Although the body is sturdy, it is still made of plastic and can crack or wear out over time with heavy use or impacts. Reinforcements or protective covers may be necessary for long-term durability.
4. **Learning Curve for Gear Ratios** The **Select Bar 54** offers flexibility, but beginners may find it confusing at first. Incorrect gear settings can lead to poor performance or damage to the motor.
5. **Dependence on Emtek s Proprietary Parts** Some components (e.g., motors, controllers) are Emtek-specific, which may limit customization options compared to brands that use standard parts.
6. **No Built-in LED Lights** Unlike some premium RC buses, this model does not come with built-in lighting, which can be a drawback for nighttime or aesthetic purposes.
7. **Potential for Wear on Cheap Controllers** If paired with a low-quality radio system, the bus may experience lag or inconsistent response. Investing in a reliable transmitter (e.g., Emtek s own or a high-quality third-party brand) is recommended.
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### **Conclusion:**The **Emtek 84174 RC Bus** is a well-rounded, beginner-friendly remote control vehicle that offers a good balance of durability, ease of use, and affordability. Its **SMUS4 suspension, Select Bar 54 gearing, and C-C Rect Stem** provide noticeable improvements over basic models, making it a solid choice for casual drivers or those looking to gradually explore RC vehicle customization.
However, it is not ideal for **aggressive off-roading, high-speed racing, or heavy-duty use** without modifications. Users who prioritize **durability, advanced off-road performance, or extensive customization** may find more suitable options in Emtek s higher-end models (e.g., XT series) or other brands like Traxxas or HPI.
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### **Recommendation:** **Buy the Emtek 84174 RC Bus if:**- You are a **beginner** looking for a reliable, easy-to-use RC vehicle.
- You want a **budget-friendly** option with decent suspension and gearing flexibility.
- You plan to **gradually upgrade** components (motor, battery, suspension) as you gain experience.
- You already own **Emtek parts** and want compatibility with their ecosystem.
**Avoid or Consider Alternatives if:**- You need **off-road ruggedness** (opt for Emtek XT or Traxxas models).
- You want **high-speed performance** without modifications (consider a more powerful bus like the Emtek XT4).
- You prefer **premium features** like built-in lighting or advanced electronics (look at HPI or other mid-to-high-end brands).
**Final Verdict:** The Emtek 84174 is a **great starter bus** for those who want a functional, upgradeable vehicle without breaking the bank. With proper care and optional upgrades, it can provide years of enjoyable remote control driving.
Center To 54. Emtek Select Bar Appliance Pull 54 C-C, Rectangular Stem US4, Smooth US4. Bar Stem, Smooth, Satin Brass. Overall - 57.125.