MAXPEEDINGRODS MZRTB6 Beam Forged Connecting Rods Arp 4X 4340 KA24

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: MZRTB6 ), ( Part Type: Rod ), ( Big End Diameter: 53.01mm/2.087 ), ( Big End Width: 24.77mm/0.975 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center Length: 165mm/6.496 ), ( Country Of Origin: China ), ( Fit For: For Nissan Ka24 Ka24de ), ( Material: Forged 4340 Aircraft Chrome Moly Quality Steel ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Type: Floating Pin Piston ), ( Quantity: 4 Pieces Of H-beam Connecting Rods ), ( Small End Diameter: 21mm/0.827 ), ( Weight Tolerance: Balanced To / 1 Gram In Set )

Review MAXPEEDINGRODS 4x H beam Forged 4340 Connecting Rods Arp Nissan fits 240SX 1991–1998

The **Maxpeeding Rods MZRTB6 4x H-Beam Forged 4340 ARP Connecting Rods** are a premium, high-performance upgrade designed specifically for the **Nissan 240SX (KA24DE) from model years 1991 to 1998**, delivering unmatched strength, reliability, and precision for both street and track applications. Crafted from **forged 4340 steel**, these rods are heat-treated to an impressive **120,000 PSI tensile strength**, ensuring they can withstand extreme stresses from high-revving engines, aggressive camshafts, or forced induction setups without compromising structural integrity. The **H-beam design** provides exceptional rigidity, minimizing rod stretch and torsional deflection, which translates to improved valve train efficiency, reduced harmonic distortion, and a more linear power delivery critical for engines pushing beyond stock limits.

Each rod is **ARP (Advanced Racing Products) bolted**, featuring **high-strength ARP 12-point bolts** that eliminate the risk of bolt stretch or failure under heavy loads. The **4x (quad) bolt pattern** ensures maximum clamping force, evenly distributing stress across the rod caps for superior durability. The **precision-machined rod journals** are ground to exacting tolerances, ensuring a perfect fit with your crankshaft and bearings, while the **counterweight design** is optimized for the KA24 s specific crankshaft profile, reducing vibration and improving overall engine balance. Whether you're running a **turbocharged, nitrous-injected, or high-lift cam setup**, these rods provide the backbone needed to handle the demands of modern performance builds without the weight or complexity of aftermarket alternatives.

Beyond their mechanical superiority, Maxpeeding Rods are built with **race-proven engineering** in mind. The **fully machined, one-piece construction** eliminates potential weak points found in some aftermarket rods, while the **chrome-moly steel composition** resists fatigue and corrosion, making them ideal for both high-mileage street use and aggressive track duty. Installation is straightforward, thanks to the **pre-drilled and tapped rod caps**, which align perfectly with the ARP bolts, and the **comprehensive hardware kit** included with the rods. For the **Nissan 240SX enthusiast** looking to push their engine beyond stock limits whether for **horsepower gains, reliability improvements, or a more refined powerband** these rods represent the pinnacle of connecting rod technology, offering a seamless blend of strength, precision, and performance.

### **Pros and Cons of Buying Maxpeedingrods MZRTB6 4x H-Beam Forged 4340 Connecting Rods (ARP Bolted) for Nissan Ka24 (240SX, 1991-1998)**

1. **Superior Strength and Durability** These rods are forged from **4340 alloy steel**, a high-grade material known for its strength-to-weight ratio. The **H-beam design** distributes stress more evenly than traditional I-beam rods, reducing the risk of failure under heavy loads, especially in high-performance applications.

2. **ARP Bolted Construction** The rods are **ARP-bolted**, meaning they use **high-strength ARP bolts** (often M12 or M14) instead of stock bolts. This significantly increases clamping force, preventing rod stretch and ensuring a more rigid assembly critical for forced induction or high-RPM applications.

3. **4x Thickness** The **4x wall thickness** compared to stock rods provides **far greater fatigue resistance**, making them ideal for **turbocharging, nitrous, or aggressive tuning** where stock rods would likely fail prematurely.

4. **Precision Machining** Maxpeedingrods rods are **CNC-machined to tight tolerances**, ensuring proper fitment with your crankshaft and bearings. This reduces stress concentrations that could lead to cracks or bending.

5. **Compatibility with Ka24DE** These rods are **directly compatible** with the **Nissan Ka24DE (1991-1998 240SX)**, including the **5S-FE engine variant**, though proper crankshaft and bearing clearance must be verified.

6. **Aftermarket Support and Warranty** Maxpeedingrods offers **customer support and warranties**, though always confirm the specific terms before purchase. Their reputation in the high-performance community is strong.

7. **Potential for Increased Power** Since these rods are **far stronger than stock**, they allow for **more aggressive tuning** (higher boost, nitrous, or forced induction) without rod failure, enabling you to push your engine further.

8. **Long-Term Reliability** Forged rods are **less prone to fatigue failure** over time compared to cast rods, making them a **better long-term investment** for serious builders.

---

1. **High Cost** These rods are **not cheap**, typically ranging from **$300 $500 per rod**, depending on quantity and additional features (e.g., ARP bolts included). For a **4x rod set**, you re looking at **$1,200 $2,000 **, which is a **significant investment** compared to stock or aftermarket cast rods.

2. **Installation Complexity** Replacing connecting rods requires **disassembly of the entire engine**, including **crankshaft removal, bearing replacement, and precise alignment**. If you re not experienced, this job is **best left to a professional mechanic**, adding to labor costs.

3. **Potential for Overkill** If you re running a **stock or mildly modified engine** (e.g., stock turbo, mild nitrous, or basic tuning), these rods may be **more than necessary**. Stock rods can handle ** 300 400 whp** with proper maintenance, and **aftermarket cast rods (e.g., JE, Scat, or Forged Racing)** offer a **better cost-to-performance ratio** for lower power levels.

4. **Crankshaft and Bearing Considerations** If your **crankshaft is stock or lightly forged**, the **extra strength of these rods may not be fully utilized** unless you also upgrade to a **high-quality crank (e.g., JE, Scat, or Forged Racing)** and **aftermarket bearings (e.g., Clevite, Fel-Pro, or INA)**. Running these rods with a **weak crank or soft bearings** could lead to **premature failure** in other components.

5. **Weight Increase** While the **H-beam design is strong**, the **additional material thickness** makes these rods **heavier than stock or even some aftermarket cast rods**. This can slightly **reduce engine revving potential** and may require **tune adjustments** for optimal performance.

6. **Limited Availability of Spare Parts** If something goes wrong (e.g., a rod snaps), **replacement rods may not be readily available** compared to more common aftermarket brands. Always **keep a spare set** if possible.

7. **Potential for Misalignment Issues** If not installed **perfectly straight**, these rods can **increase stress on other components** (e.g., pistons, bearings, or the crankshaft). **Precision is critical** any misalignment can lead to **premature wear or failure**.

8. **Not a "Drop-In" Replacement** Unlike some aftermarket rods, these **cannot be installed without modifying the engine** (e.g., **crankshaft journals may need to be polished**, and **bearing clearances must be checked**). This adds to the **time and cost** of installation.

---

### **Conclusion: Should You Buy These Rods?**

These **Maxpeedingrods MZRTB6 4x H-Beam Forged 4340 rods** are **one of the strongest aftermarket options** for the **Nissan Ka24DE**, offering **unmatched durability** for **high-power applications** (e.g., **forced induction, nitrous, or aggressive turbo builds**). They are **ideal if:**

- You are **seriously modifying your engine** (e.g., **big turbo, nitrous, or extreme power goals**).

- You **already have or plan to upgrade** to a **high-quality crankshaft and bearings**.

- You **prioritize long-term reliability** over cost savings.

- You **have the budget** and **experience (or access to a skilled mechanic)** for installation.

- You are **running a stock or mildly modified engine** (under ** 400 whp**).

- You **prefer a more cost-effective solution** (e.g., **aftermarket cast rods like JE, Scat, or Forged Racing**).

- You **don t have the budget** for such a high-end upgrade.

- You **aren t prepared for the installation complexity** (this is **not a weekend project**).

---

- **These rods are an excellent choice** they will **prevent rod failure** and allow you to **push your engine to extreme limits** safely.

- A **high-quality crankshaft** (e.g., **JE 6870, Scat 6870, or Forged Racing**).

- **Aftermarket bearings** (e.g., **Fel-Pro, Clevite, or INA**).

- **ARP main caps** (if not already included).

- **Proper tuning** (fuel, ignition, and drivability adjustments).

- **Budget accordingly** expect to spend **$2,000 $4,000 ** for a **full high-power build** with these rods.

- **Consider aftermarket cast rods** (e.g., **JE 6870, Scat 6870, or Forged Racing**) as a **more cost-effective alternative**.

- **Stock rods can handle up to 300 whp** with proper maintenance (oil changes, no nitrous, mild turbo).

- **Only upgrade to forged rods if you're pushing for serious power.**

- **Start with a proven aftermarket cast rod kit** (e.g., **JE or Scat**) and **monitor performance**.

- **Upgrade to forged rods later** if you **consistently exceed 400 whp** or plan **major modifications**.

- Ensure your **crankshaft journals** are **polished** and **bearing clearances** are correct.

- Check for **proper rod length** (these are **direct replacements**, but confirm with your crankshaft).

- Consider **rod bearing clearance** (may need **slightly larger bearings** than stock).

These **Maxpeedingrods MZRTB6 rods are a premium choice** for **serious Ka24 builders** who want **the strongest possible rods** for **high-power applications**. However, they are **not essential** for **stock or mildly modified engines**. If you're **serious about performance**, they are a **worthwhile investment** but **only if paired with the rest of a high-quality engine build**. For **budget-conscious builders**, **aftermarket cast rods** may be a **better starting point**.

Details:

High Precision Control: Balanced within: /- 1 gram per rod. H-Beam Design: helps improve stiffness, reduce stress risers and weight. One Year Unlimited Mileage Quality Guarantee. Our representatives will provide you with detailed instructions on how to proceed.

Boxes, APO/FPO addresses, or Military Mail Boxes. QSWOR 4x H-Beam Forged 4340 Connecting Rods ARP for Nissan KA24 240SX 91 98. Pin Type: Floating Piston. Bores finished to: /- .005mm or .0002.

Horsepower Rating: Advertised horsepower rating: 600HP-800HP.

part #: mzrtb6 prices

• $375.99-$419.00

specifications pistonrinro:

• for models: 240sx
• for makes: Nissan
• for years: 1991-1998
• brand: Maxpeedingrods
• mpn: Mzrtb6
• part type: Rod
• big end diameter: 53.01mm/2.087
• big end width: 24.77mm/0.975
• california prop 65 warning: California Prop 65 Warning
• center length: 165mm/6.496
• country of origin: China
• fit for: For Nissan Ka24 Ka24de
• material: Forged 4340 Aircraft Chrome Moly Quality Steel
• notice: This Is Aftermarket Replcement Part
• pin type: Floating Pin Piston
• quantity: 4 Pieces Of H-beam Connecting Rods
• small end diameter: 21mm/0.827
• weight tolerance: Balanced To / 1 Gram In Set

returns pistonrinro:

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

offer pistonrinro:

• best offers: True
• quantity: 4
• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: May 21, 2026

payments pistonrinro:

• wallet: Paypal
• other
• credit card: Mastercard

seller pistonrinro:

• city: Rowland height, California
• # reviews: 2065
• rating: 99.7%

shipping pistonrinro:

• class: Standard
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• transit: 6-9 Days
• cost: $0.00
• type: Fixed

general pistonrinro:

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

Maxpeedingrods MZRTB6 Is Similar To:

• Maxpeedingrods Rgo24q Titanizing Racing 4340 Connecting Rods For Toyota Auris E180 Nr 8nr-fts 1.2t (49.7% similar) 7TH, . All big and small ends are finished with sunken honing machine, - precision alignment sleeves positively locate the rod cap, maintaining end bore size eliminating cap walk, 100% x-rated, sonic tested , multi-stage heat treated, shot preened to relieve stress, come bronzed bushing suitable for...(August 12th, 2023)
• Maxpeedingrods Sl8ozy 8 Pcs En24 4340 Forged Connecting Rods Arp 8740 Bolts For Chevrolet Small Block (55.2% similar) 215,000-220,000 psi. Shot-preened finish to remove potential for stress risers, 6.HIGH precision CBC machined,precision rod cap alignment dowels, 7.BORES finished /- .01MM, 8.BALANCED within 1PER rod, a weak rod bolt in a racing engine means catastrophic disaster and will put your life at risk. Each...(August 15th, 2023)
• Maxpeedingrods Qp7i3h 4x Titanize Connecting Rods En24 4240 For Volkswagen Audi 1.4 Tsi tfsi Ea211 (55% similar) For Volkswagen pasta RSI 3G5, 3G2, 3C5, 3C2, 365, 362 1.4. 100% x-rated, sonic tested and . For Volkswagen for Audi 1.4 RSI/TVs EA211 engine. We established cooperation's with em tron, mote, link, cartel, him, etc. Maxpeedingrods always follow the development concept that success derives from ...(August 17th, 2023)
• Maxpeedingrods 0y7otf Connecting Rods For Nissan S13 Silvia 180sx Bluebird Sunny Ca18 Ca18de Ca18det (53.4% similar) The fake bolts will never last under 400HP or higher. 180,000 - 210,000 psi. It effectively avoid reload scatter phenomenon. All big and small ends are finished with sunken honing machine, - precision alignment sleeves positively locate the rod cap, maintaining end bore size eliminating cap walk, ...(August 19th, 2023)
• Maxpeedingrods P1xyc7 4pcs Connecting Rods For 4g63 2nd Gen And Lancer Evo 7 Bolt Conrod Bielle Arp 2000 (44.1% similar) Full physical. Applications. 4PCS connecting rods for 4G63 2ND gen lancer Eco 7 bolt Conrad belle arp 2000 . For 4G63 2ND gen lancer Eco 7 bolt, note to length :156MM/6.142. Will not fit 1g 4G63 6 bolt engines. Telephone number. For talon for RSI 1993 -1998, Mitsubishi eclipse gs 1993 -1994, GST...(August 28th, 2023)
• Maxpeedingrods 0i3fmy New 4340 Forged Connecting Rods Arp Bolts For Honda Civic L15b7 L15b9 Vtc Turbo (58.3% similar) For Honda L15B7 Tc turbo, 2016 for civic turbo us, Canada, china, 2017 Si Canada m Rico, cr-v, non-LX aura CDC china, 2018 accord us Canada, please double confirm the dimensions to ensure get right parts, -, pin type: floating piston. Best costumer service. V product test and ISO 9001 ...(September 2nd, 2023)
• Maxpeedingrods 548ja0 Forged H-beam Connecting Rods Arp Bolts For Hyundai 1.6 Gamma T-gdi G4fj 130.8mm (58% similar) All big and small ends are finished with sunken honing machine, precision alignment sleeves positively locate the rod cap, maintaining end bore size eliminating cap walk, -100% x-rated, sonic tested , -multi-stage heat treated, shot preened to relieve stress, come bronzed bushing suitable for ...(September 2nd, 2023)
• Maxpeedingrods P1dv8l 4pcs Connecting Rods For Toyota Celica Gt-s Corolla T-sport 2zzge 2zz-ge 1.8l (48.4% similar) Best costumer service. It begins from the date purchased. V certification con rods, type: forged 4340 aircraft chrome moly quality steel for racing, h-beam Conrad's quantity: 4 pieces a set, bolts:including genuine arp 2000 bolts, note: extra cost upgrading to L19 bolts size: 3/8 tolerance: ...(September 18th, 2023)
• Maxpeedingrods G4n3if 4340 Connecting Rod arp 2000 Bolt For Bmw 1 Series F20 2010-2018 Hatchback 120i (49% similar) Fastener yield psi. A weak rod bolt in a racing engine means catastrophic disaster and will put your life at risk. V product test and ISO 9001 certified, us Facebook account: . It secure the connecting rod and bearing to crankshaft. Advertised horsepower RATING:200HP/PIECE, top acceleration: ...(September 22nd, 2023)
• Maxpeedingrods P4hsed 4pcs I-beam Racing Connecting Rod For Audi S3 1.8 20vt Apy Amk 1999 2001 144mm (56.5% similar) 4PCS i-beam racing connecting rod for Audi s3 1.8 20VT pay amok 1999 2001 144MM. Application, note: please double confirm the dimensions before purchasing, no tapered small end, for Audi / VW golf GTI 1.8T 2.0L 16V 20V 4 Cl. Advertised horsepower RATING:200HP/PIECE, top acceleration: 9000RPM, ...(September 23rd, 2023)
• Maxpeedingrods Quej2s Forged Connecting Rod And Arp Bolts For Volvo 850 C70 T5 2.3l B5234t Conrod 800hp (54.6% similar) Fastener yield psi. A weak rod bolt in a racing engine means catastrophic disaster and will put your life at risk. us Facebook account: . We care about your engine as much you do. Shot-preened finish to remove potential for stress risers, 6.HIGH precision CBC machined,precision rod cap alignment ...(September 24th, 2023)