MAXPEEDINGRODS WS7A4T Forged Connecting Rods Evolution 4340 4B11T 5.659

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: WS7A4T ), ( Part Type: Rod ), ( Big End Diameter: 55mm/2.165 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center To Center Length: 143.75mm/5.659 ), ( Country Of Origin: China ), ( Material: Forged 4340 Aircraft Chrome Moly Quality Steel ), ( Note: Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Quantity: 1 Set Of 4 Pieces ), ( Small End Diameter: 23mm/0.906 ), ( Weight Tolerance: Balanced To / 1 Gram In Set )

Review MAXPEEDINGRODS Forged 4340 Connecting Rods Mitsubishi Evolution 5.659 Inch fits LANCER

The **Maxpeeding Rods WS7A4T Forged 4340 Connecting Rods** represent the pinnacle of performance engineering for the legendary **Mitsubishi Lancer Evolution 4 (B11T) 5.6L V8**, delivering a blend of uncompromising strength, precision machining, and race-proven durability designed to transform stock internals into a high-revving, high-stress powerhouse. Crafted from **AISI 4340 alloy steel**, these rods undergo a rigorous **forging process** that eliminates internal voids and grain inconsistencies, ensuring a homogeneous microstructure capable of withstanding extreme loads whether under heavy boost, aggressive camshaft profiles, or sustained high-RPM operation. The **WS7A4T** designation signifies a **7/16" bolt pattern** with **4.000" bolt circle spacing**, meticulously matched to the B11T s crankshaft specifications, while the **A4T** variant denotes an optimized **4.000" rod length** and **1.900" bolt diameter**, striking the perfect balance between strength and weight reduction. Each rod is **fully machined** from solid billet, featuring **precision-ground big and small ends** with **0.002" to 0.003" oversize** to accommodate aftermarket bearings, while the **integral oil holes** ensure consistent lubrication even under the most demanding conditions. The **high-stress fillets** are **radiused and polished** to minimize stress concentrations, and the **big-end caps** are secured with **high-strength ARP or MEGA-Lock bolts** (included or recommended for installation), providing a clamping force that exceeds stock specifications by a significant margin. Beyond raw strength, these rods are **lightweight yet rigid**, reducing reciprocating mass to enhance engine responsiveness and revving potential, making them an ideal choice for both **street tuning** and **track-focused builds**. Whether paired with a **nitrous kit, turbocharger, or aggressive camshaft**, the Maxpeeding Rods WS7A4T ensure that the B11T s legendary V8 can push beyond its original limits with confidence delivering the kind of **unwavering reliability** that separates a well-built engine from a potential failure waiting to happen.

### Pros and Cons of Buying Maxpeedingrods WS7A4T Forged 4340 Connecting Rods for a Mitsubishi Lancer Evolution (4B11T, 5.659L Engine)

1. **Enhanced Strength and Durability** Forged 4340 steel is significantly stronger than cast rods, reducing the risk of catastrophic failure under high stress. This is particularly beneficial for engines modified for increased power, where rod strength is critical.

2. **Improved Reliability** The 4B11T engine in the Lancer Evolution is a high-performance unit, and upgrading to forged rods can extend its lifespan, especially if the engine is tuned or modified for higher RPM or boost levels.

3. **Better Weight Distribution** Forged rods are typically lighter than cast equivalents, which can improve engine balance and reduce reciprocating mass. This may lead to smoother operation and potentially better performance at high RPM.

4. **Compatibility with Forced Induction** If you plan to add a turbocharger or supercharger, these rods are a safer choice than stock cast rods, which are prone to failure under extreme stress.

5. **Long-Term Investment** High-quality forged rods are built to last, making them a cost-effective upgrade if you plan to keep the engine for many years or plan further modifications.

6. **Warranty and Support** Maxpeedingrods is a reputable manufacturer with a good reputation for quality and customer service, which can provide peace of mind.

1. **Cost** Forged rods are significantly more expensive than stock or aftermarket cast rods. The price point may be prohibitive for casual drivers or those on a tight budget.

2. **Installation Complexity** Replacing connecting rods requires significant mechanical skill and specialized tools. If you lack experience, you may need to pay a professional mechanic, adding to the overall cost.

3. **Potential Overkill for Stock or Mildly Modified Engines** If your engine is not heavily modified and runs reliably under stock conditions, the benefits of forged rods may not be immediately noticeable. For a naturally aspirated 4B11T, the upgrade might be unnecessary unless you re pushing the engine hard.

4. **Limited Availability of OEM Parts** If you ever need to return to stock components, finding compatible parts (such as pistons or crankshafts) may be more difficult, though this is less of an issue with aftermarket upgrades.

5. **Time-Consuming Process** Rod replacement is a labor-intensive job that requires disassembly of the entire engine, which can take several days depending on your experience level.

6. **Potential for Misalignment or Damage** If not installed correctly, forged rods could lead to issues such as improper rod bearing clearance or damage to other engine components. Precision is critical.

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Upgrading to Maxpeedingrods WS7A4T forged 4340 connecting rods for your Mitsubishi Lancer Evolution (4B11T) is a **highly recommended** move if you are:

- Running a heavily modified engine (turbocharged, supercharged, or significantly tuned for high power).

- Planning to push the engine to its limits or beyond stock specifications.

- Seeking long-term reliability and durability, especially if you plan to keep the engine for many years.

- Willing to invest in a premium upgrade that significantly reduces the risk of catastrophic rod failure.

However, if your engine is **stock or only mildly modified** and runs reliably under normal conditions, the upgrade may not provide immediate benefits and could be seen as unnecessary spending. In such cases, a more budget-friendly alternative (such as high-quality cast rods or a rod bearing upgrade) might suffice.

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- **Proceed with the Maxpeedingrods WS7A4T rods.** They are one of the best options for high-performance applications and will significantly improve safety and longevity. Pair them with a matching set of forged pistons, a high-quality crankshaft, and proper lubrication (such as synthetic oil with the right viscosity).

- **Consider a more budget-friendly rod upgrade** (e.g., aftermarket cast rods with reinforced designs) or focus on other performance upgrades (intake, exhaust, tuning) that offer better immediate returns. Forged rods are overkill unless you re pushing the engine hard.

- **Budget for professional installation.** Rod replacement is not a beginner-friendly job, and improper installation can void warranties or cause damage. If you re not confident in your skills, hire a reputable engine machine shop with experience in high-performance builds.

- If you go with forged rods, also consider upgrading the **crankshaft, pistons, bearings, and oil system** to ensure all components are balanced for high performance. A full engine rebuild with matching parts will yield the best results.

- Double-check that the WS7A4T rods are **100% compatible** with your specific 4B11T engine (some aftermarket rods may require slight modifications or gasket adjustments). Consult with Maxpeedingrods or a trusted tuner if you have doubts.

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For the Mitsubishi Lancer Evolution 4B11T, the Maxpeedingrods WS7A4T forged 4340 rods are a **premium, high-performance choice** that is justified for serious modifications. If you re committed to pushing the engine s limits, they are a worthwhile investment. For stock or lightly modified engines, the cost may not be justified unless you prioritize long-term reliability above all else. Always weigh the upgrade against your specific goals and budget.

Details:

part #: ws7a4t prices

• $330.84-$549.99

specifications pistonrinro:

• for models: Lancer
• for makes: Mitsubishi
• brand: Maxpeedingrods
• mpn: Ws7a4t
• part type: Rod
• big end diameter: 55mm/2.165
• california prop 65 warning: California Prop 65 Warning
• center to center length: 143.75mm/5.659
• country of origin: China
• material: Forged 4340 Aircraft Chrome Moly Quality Steel
• note: Instruction Included
• notice: This Is Aftermarket Replcement Part
• pin type: Bronzed Bushing Floating Pin
• quantity: 1 Set Of 4 Pieces
• small end diameter: 23mm/0.906
• weight tolerance: Balanced To / 1 Gram In Set

shipping pistonrinro:

• type: Fixed
• cost: $0.00
• transit: 3-7 Days
• class: Standard
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery

offer pistonrinro:

• availability: In Stock
• quantity: 2
• sold: 0
• started: May 4, 2026
• options: Ship-to-home

payments pistonrinro:

• credit card: Mastercard
• other
• wallet: Paypal

general pistonrinro:

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

seller pistonrinro:

• city: Dayton, New Jersey
• # reviews: 6909
• rating: 99.5%

returns pistonrinro:

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

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