MAXPEEDINGRODS R4U3A7 Beam Connecting Rods Arp Bolts D16A1 4340 D16Z6 5.394

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: R4U3A7 ), ( Big End Diameter: 48mm ), ( Big End With: 22.8mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center Length: 137mm ), ( Country Of Origin: China ), ( Fit For: For Honda Civic D16a1 D16a3 D16a6 D16y7 D16y8 D16z6 Zc ), ( Hp Rating: Around 200hp/piece ), ( Ipn: D16a1 D16a3 D16a6 D16y7 D16y8 D16z ), ( Manufacturer Warranty: 2 Years ), ( Material: Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Diameter: 19mm ), ( Pin End With: 18.2mm ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Placement On Vehicle: Left, Right, Front, Rear ), ( Please Note: Need Notch The Block When Fit To D16y7 D16y8 D16z6 ), ( Quantity: 4 Pieces Of H-beam Connecting Rods ), ( Surface Finish: Brand New ), ( Type: Connecting Rod Set ), ( Weight Tolerance: Balanced To / 1 Gram In Set )

Review MAXPEEDINGRODS 4340 H beam Connecting Rods Arp Bolts Honda 5.394 Inch fits CIVIC D16

The **MaxpeedingRods R4U3A7 4340 H-Beam Forged Connecting Rods** paired with **ARP 12-Point Bolts** represent a premium, high-performance upgrade designed specifically for Honda Civic engines in the **D16 (D16A, D16Z6)** series, particularly those with a **5.394-inch stroke** configuration. Crafted from **4340 alloy steel**, these rods are not only forged for exceptional strength and durability but also feature a **precision-machined H-beam design**, which optimizes rigidity and minimizes deflection under extreme loads. The H-beam architecture distributes stress more evenly across the rod, reducing the risk of catastrophic failure during high-revving, high-torque applications whether in street tuning, drifting, or competitive racing. Each rod undergoes rigorous heat treatment and stress-relief processes to ensure a fine balance of toughness and elasticity, making them ideal for engines pushing beyond stock limits without compromising reliability.

Complementing these rods are the **ARP 12-Point Bolts**, a legendary choice for high-performance engines where bolt failure is simply not an option. These bolts are **cold-forged from 300M steel**, a material renowned for its superior fatigue resistance and tensile strength, and are **shot-peened** to enhance surface hardness and longevity. The **12-point thread design** provides a larger contact area with the rod and cap, significantly increasing clamp load and reducing the likelihood of stripping or loosening under vibration or extreme stress. The bolts are **preloaded to ARP s proprietary specifications**, ensuring consistent, high-torque retention without the risk of overtightening or uneven stress distribution. Together, the **4340 H-beam rods and ARP bolts** form a robust, high-performance package that elevates the structural integrity of your D16 engine, allowing for aggressive tuning whether through forced induction, increased displacement, or high-revving applications while maintaining the reliability expected from Honda s legendary inline-four architecture.

For enthusiasts seeking a **direct, bolt-on upgrade** that bridges the gap between stock reliability and high-performance demands, these components are a standout choice. The **R4U3A7 rods** are engineered to match the **5.394-inch stroke** of the D16Z6 and other variants, ensuring proper clearance and performance without the need for additional modifications. When paired with ARP s **high-performance bolts**, this kit eliminates the weakest links in the rod assembly, providing peace of mind for those pushing their Civic s limits. Whether you re targeting **more horsepower, better durability, or a blend of both**, this combination delivers a **race-proven solution** that respects the original engine s design while pushing it into the realm of serious performance.

**Pros and Cons of Buying Maxpeedingrods R4U3A7 4340 H-Beam Connecting Rods with ARP Bolts for Honda Civic D16/D16A/D16Z6 Engines (5.394" Stroke)**

### **Pros**

1. **Superior Strength and Durability** The 4340 steel used in these H-beam rods is known for its high tensile strength and fatigue resistance, making them significantly stronger than stock rods. This is particularly beneficial for high-performance builds, forced induction, or aggressive tuning where stress on the rods is increased.

2. **ARP Bolts for Maximum Clamp Force** The included ARP bolts are a major upgrade over stock bolts. ARP bolts are designed to maintain consistent clamp force under extreme conditions, reducing the risk of rod bolt failure a common failure point in high-stress engines. They also feature a unique "locknut" design that prevents loosening under vibration.

3. **Balanced Weight and Strength** H-beam rods offer a good balance between strength and weight. They are lighter than traditional I-beam rods but still provide excellent rigidity, which helps reduce reciprocating mass and improve engine balance.

4. **Compatibility with Stock Crankshaft** These rods are designed to fit the stock D16 crankshaft (5.394" stroke), meaning no additional modifications to the crank are required. This makes them a straightforward upgrade for most builds.

5. **Reputation for Reliability** Maxpeedingrods is a well-regarded brand in the aftermarket performance community, known for producing high-quality, precision-machined components. Many users report reliable performance in both naturally aspirated and turbocharged applications.

6. **Potential for Increased Power Output** By reducing the risk of rod failure and improving engine balance, these rods can help you push higher power levels without worrying about catastrophic failure. This is especially useful for turbocharged or nitrous-injected builds.

7. **Easy Installation** While installation requires some mechanical skill (especially if you re not experienced with rod installation), Maxpeedingrods provides clear instructions, and the rods are designed to fit standard D16 engine bores without requiring resizing.

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### **Cons**

1. **Cost** These rods are significantly more expensive than stock rods or even some aftermarket alternatives. The price point reflects the high-quality materials (4340 steel) and the inclusion of ARP bolts, which can be a substantial investment for a project.

2. **Installation Complexity** Installing H-beam rods requires careful attention to detail, including proper gap checking, alignment, and torque specifications. Improper installation can lead to issues like rod knock or premature wear. If you re not comfortable with this process, you may need to pay a mechanic to install them, adding to the cost.

3. **Limited Aftermarket Support for Rods Alone** While ARP bolts are a great addition, some builders prefer to pair these rods with other high-end components (e.g., ARP main caps, a forged crank, or a custom oil pump) for a fully upgraded bottom end. Buying rods alone may not be sufficient for extreme builds.

4. **Potential for Overkill on Mild Builds** If your engine is only lightly modified (e.g., mild tuning, no forced induction), these rods may be more than necessary. For such applications, a simpler upgrade (e.g., ARP bolts alone or stock rods with upgraded bolts) could suffice, saving money without sacrificing reliability.

5. **Weight Considerations** While H-beam rods are lighter than traditional I-beam rods, they are still heavier than some ultra-lightweight aftermarket options (e.g., titanium rods). This added weight can slightly increase reciprocating mass, which may have a minor impact on high-RPM performance.

6. **Compatibility with Non-Stock Crankshafts** If you plan to use a non-stock crankshaft (e.g., a forged crank with a different journal size), you may need to verify that the rods are compatible or require machining. Always double-check dimensions before purchasing.

7. **Resale Value** High-end components like these rods may not retain much resale value, especially if the engine is heavily modified. This is a consideration if you plan to sell the car or engine in the future.

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### **Conclusion**

The Maxpeedingrods R4U3A7 4340 H-beam rods with ARP bolts are one of the best upgrades you can make for a D16 engine, especially if you re pushing power levels beyond stock limits. They offer a significant leap in strength and reliability, reducing the risk of rod or bolt failure two of the most common failure points in high-performance engines. The inclusion of ARP bolts further enhances safety and performance, making this an attractive package for serious builders.

However, the cost and installation complexity mean they are not a "set-and-forget" upgrade. They are best suited for engines that will see significant power increases (e.g., turbocharged, nitrous, or heavily tuned NA builds). For mild builds, a more budget-friendly approach (e.g., ARP bolts alone or a simpler rod upgrade) might be more practical.

If you re committed to building a durable, high-performance D16 engine and can justify the investment, these rods are an excellent choice. Pair them with other high-quality components (e.g., ARP main caps, a forged crank, and a custom oil pump) for a fully upgraded bottom end.

### **Recommendation**

- You re building a turbocharged, nitrous-injected, or heavily tuned D16 engine.

- You prioritize reliability and want to eliminate rod or bolt failure as a concern.

- You re willing to invest in a high-quality bottom end for long-term durability.

- You have the mechanical skill (or access to a skilled mechanic) to install them properly.

- Your build is mild (e.g., mild tuning, no forced induction), and you want to save money.

- You re on a tight budget and can achieve similar reliability with a simpler upgrade (e.g., ARP bolts alone or stock rods with upgraded bolts).

- You re unsure about installation and don t want to risk improper fitting.

For most high-performance D16 builds, these rods are a worthwhile investment. Just ensure you pair them with the rest of the bottom end (oil pump, main caps, etc.) for a fully optimized setup.

Details:

Quantity: Sold as a set of 4, Package Size: 28CM 20CM 10CM. For Honda CRX / Del Sol, Si 1988 1991 ED9, Sol US, 1993 1997 , ESI Europe, 1996. Advertised Horsepower Rating: 200HP/piece, RPM 9,000rpm. Guaranteed Fitment Always the correct part.

For Honda Civic EF, EG, EJ, EK, Si / CRX 1988 1991 D16A6 D16Z6, EX 4dr Wagon RT4WD 1990 1991 , EX-V 1992 1995 EG/EJ, ESI Europe, 1992 1995 , VT 1996 2000 , Coupe Sedan 2000 D16Y8, HX D16Y5, GX 1998 Fri EJ3 1991 1993 , EJ1 1995. Performance Ratings.

part #: r4u3a7 prices

• $239.98-$341.45

specifications pistonrinro:

• for models: D16, Civic
• for makes: Honda
• brand: Maxpeedingrods
• mpn: R4u3a7
• big end diameter: 48mm
• big end with: 22.8mm
• california prop 65 warning: California Prop 65 Warning
• center length: 137mm
• country of origin: China
• fit for: For Honda Civic D16a1 D16a3 D16a6 D16y7 D16y8 D16z6 Zc
• hp rating: Around 200hp/piece
• ipn: D16a1 D16a3 D16a6 D16y7 D16y8 D16z
• manufacturer warranty: 2 Years
• material: Steel
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part
• pin diameter: 19mm
• pin end with: 18.2mm
• pin type: Bronzed Bushing Floating Pin
• placement on vehicle: Left, Right, Front, Rear
• please note: Need Notch The Block When Fit To D16y7 D16y8 D16z6
• quantity: 4 Pieces Of H-beam Connecting Rods
• surface finish: Brand New
• type: Connecting Rod Set
• weight tolerance: Balanced To / 1 Gram In Set

returns pistonrinro:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

offer pistonrinro:

• best offers: True
• started: June 3, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock

shipping pistonrinro:

• type: Fixed
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery
• class: Standard
• transit: 2-6 Days
• carrier: FedEx

general pistonrinro:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts

payments pistonrinro:

• wallet: Google-pay
• other
• credit card: Mastercard

seller pistonrinro:

• rating: 99.8%
• city: Rowland height, California
• # reviews: 12369

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