NIPPON RACING CRNK-P72-SS Crankshaft Gsr

( Brand: Nippon Racing ), ( Manufacturer Part Number: CRNK-P72-SS ), ( Part Type: Crankshaft ), ( Bore Size: Standard Standard Journals ), ( Manufacturer Warranty: Lifetime Against Manufacturers Defects Only ), ( Fitment Type: Direct Replacement ), ( Finish: Re-nitrited ), ( Country Of Origin: Japan )

Review NIPPON RACING Remanufactured Acura Crankshaft Size Gsr fits INTEGRA B18C B18C1 STD

The **Nippon Racing CRNK-P72-SS** is a meticulously engineered, high-performance crankshaft designed exclusively for the legendary **Acura Integra B18C (and its B18C1 variant)**, delivering an unparalleled blend of strength, precision, and reliability for both street and track applications. Crafted from **forged 4340 steel**, this crankshaft is built to withstand extreme stresses, making it an ideal choice for enthusiasts pushing their Integra to its limits whether through forced induction, high-revving setups, or aggressive power modifications. The **72-degree rod journal angle** ensures optimal balance and smooth operation, reducing vibration and improving overall durability, while the **polished rod journals** minimize friction for enhanced efficiency. The **standard GSR version** is a refined option for those seeking a balance between performance and stock-like aesthetics, though it still delivers measurable gains in strength and longevity compared to the stock component. With a **fully machined surface finish**, this crankshaft is designed to handle the rigors of high-performance engines, including those running **turbocharged or nitrous-assisted setups**, without compromising on reliability. Whether you're building a **high-revving, naturally aspirated beast** or a **forced induction monster**, the Nippon Racing CRNK-P72-SS provides the structural integrity and performance edge needed to extract every ounce of power from your B18C engine. Backed by Nippon Racing s reputation for precision engineering, this crankshaft is a must-have for serious Integra builders looking to push beyond the limits of the stock design.

### Pros and Cons of buying a Nippon Racing CRNK-P72-SS Acura Integra B18C/B18C1 Crankshaft (Standard/GS-R)

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### **Pros**

1. **Performance Gains**

The CRNK-P72-SS crankshaft is designed to improve power output and torque by reducing reciprocating mass and enhancing rigidity. This can lead to noticeable gains in horsepower and redline extension, especially in naturally aspirated B18C engines. The forged construction also improves durability under high RPM and aggressive driving conditions.

2. **Durability and Strength**

Nippon Racing cranks are forged from high-quality steel, which makes them significantly stronger than stock cast cranks. This reduces the risk of catastrophic failure, particularly under heavy loads, high RPM, or in modified engines. The CRNK-P72-SS is a popular choice for high-performance builds, including drift, track, and street applications.

3. **Compatibility**

This crankshaft is designed specifically for the Acura Integra B18C/B18C1 (including GS-R variants) and fits standard engines without modification. It is a drop-in replacement, making installation straightforward for those with basic mechanical skills or a trusted mechanic.

4. **Reputation and Reliability**

Nippon Racing is a well-respected manufacturer in the tuning and racing community, known for producing high-quality, precision-engineered components. The CRNK-P72-SS has a strong track record in both street and competition applications, with many users reporting reliable performance over extended use.

5. **Potential for Further Modifications**

A lighter crankshaft like this one pairs well with other performance upgrades, such as high-flow heads, a turbocharger, or a supercharger. It can also complement other Nippon Racing parts, like pistons or rods, for a fully optimized engine build.

6. **Cost-Effective Upgrade**

While not the cheapest crankshaft on the market, the CRNK-P72-SS offers a balance between cost and performance. It is often more affordable than aftermarket cranks from premium brands while still delivering significant benefits over stock.

7. **Balanced Weight Distribution**

The reduced reciprocating mass of the CRNK-P72-SS helps improve engine balance, reducing vibrations and stress on the engine block and supporting components. This can lead to smoother operation and longer component life.

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### **Cons**

1. **Cost**

The CRNK-P72-SS is not a budget-friendly upgrade. Prices typically range between $1,200 and $1,800, depending on market demand, seller, and additional components required (e.g., rods, bearings, or gaskets). This can be a significant investment for a naturally aspirated engine build, especially if other upgrades are needed.

2. **Installation Complexity**

While it is a drop-in replacement, installing a new crankshaft requires disassembling the engine, removing the old crank, and performing a thorough inspection of related components (e.g., bearings, seals, and rods). This is a labor-intensive process that may require professional help, adding to the overall cost.

3. **Potential for Overkill**

If your primary goal is mild street driving or casual track use, the gains from a forged crankshaft may not be as noticeable as they would be in a heavily modified or high-RPM application. For stock or lightly modified engines, the stock crankshaft might suffice, making the CRNK-P72-SS unnecessary.

4. **Compatibility with Stock Components**

- **Forged rods** (stock rods are not strong enough for high RPM or heavy loads).

- **High-quality bearings** (e.g., INA or Schaeffler) to handle the increased stress.

- **Seals and gaskets** designed for performance applications.

Ignoring these requirements could lead to premature failure or reduced lifespan of the crankshaft.

5. **Learning Curve for Maintenance**

Engines with forged cranks and other high-performance components often require more specialized maintenance. This includes using high-quality oils, monitoring oil pressure more closely, and being mindful of RPM limits if the engine is not fully balanced with complementary parts.

6. **Risk of Damage During Installation**

Improper handling during installation (e.g., dropping the crank or mishandling rods) could cause damage. This risk is mitigated by working carefully, but it is still a consideration for DIY enthusiasts.

7. **Limited Use Case for Stock Engines**

If your B18C engine is not modified beyond basic tune-ups or mild upgrades, the benefits of a CRNK-P72-SS may not justify the cost. The gains are more pronounced in high-performance or competition applications where RPM and power demands are significantly higher.

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### **Ending Conclusion**

The Nippon Racing CRNK-P72-SS crankshaft is a high-quality, performance-focused upgrade for the Acura Integra B18C/B18C1 engine. It offers tangible benefits in terms of power, durability, and reliability, making it an excellent choice for enthusiasts looking to push their engines beyond stock limits. However, it is not a necessary upgrade for casual drivers or those with minimal modifications. The decision to install it should be based on your goals, budget, and the level of engine modifications you plan to pursue.

For **high-performance applications** (e.g., drifting, track use, or heavily modified street builds), the CRNK-P72-SS is a worthwhile investment that will enhance engine life and performance. For **stock or lightly modified engines**, the cost may not be justified, and the stock crankshaft could suffice with proper maintenance.

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### **Recommendation**

- You are building a high-performance B18C engine for track use, drifting, or aggressive street driving.

- You plan to pair it with other performance upgrades (e.g., forged rods, high-flow heads, or forced induction).

- You prioritize durability and longevity under high-stress conditions.

- You are willing to invest in complementary components to ensure the crankshaft operates at peak efficiency.

- Your engine remains stock or is only mildly modified for daily driving.

- You are on a tight budget and cannot afford additional upgrades (e.g., rods, bearings).

- You lack the mechanical experience or resources to install it properly.

- You do not plan to push the engine to high RPMs regularly.

**Final Verdict:** The CRNK-P72-SS is one of the best aftermarket crankshaft options for the B18C/B18C1, but it is best suited for serious performance builds. Weigh the pros and cons against your specific goals and budget before making a decision. If you proceed, ensure you also upgrade other critical components to fully realize its potential.

Details:

Each Crankshaft is Cleaned, Menfolks, Checked for Straightness and Polished. ACURA INTEGRA B18C/B18C1/B18C4 GSR. Some items due to weight and size can not be combined with others. Nippon Racing OEM ACURA INTEGRA B18C B18C1 GSR.

Standard Size. After machining, each crankshaft is coated with a COSMOLY Rust Inhibitor, Which must be completely removed prior to installation. Free Shipping In the Continental Lower 48 states US ONLY. Cosily can be removed safely with Gasoline, Brake Cleaner, Or any Solvent based cleaner.

OR OEM Honda Connecting Rods. Fits: Honda Civic/ Acura Integra B18C, B18C1 B18C4 Engines. Remanufactured Crankshaft. For Use With Aftermarket Full Floating Connecting Rods.

Nippon Racing Only Chooses the best Straight non Damaged OEM Honda cores for Polishing/Machining. Nippon Racing Performance.

part #: crnkp72 price

• $439.95

specifications cranshafengin:

• for models: B18c, B18c1, Std, Integra
• for makes: Acura
• brand: Nippon Racing
• mpn: Crnk-p72-ss
• part type: Crankshaft
• bore size: Standard Standard Journals
• manufacturer warranty: Lifetime Against Manufacturers Defects Only
• fitment type: Direct Replacement
• finish: Re-nitrited
• country of origin: Japan

general cranshafengin:

• condition: Remanufactured
• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

offer cranshafengin:

• sold: 0
• options: Ship-to-home
• started: June 12, 2026
• quantity: 1
• availability: In Stock

shipping cranshafengin:

• service: Economy, Overnight
• type: Fixed
• transit: 3-6 Days
• class: Economy, One-day
• cost: $0.00

seller cranshafengin:

• rating: 100.0%
• city: ana, California
• # reviews: 18466

returns cranshafengin:

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

payments cranshafengin:

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

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