fits model: Golf.

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 9NOJ13 ), ( Part Type: Rod Bolt ), ( Big End Diameter: 56.8mm/2.236in ), ( Big End Width: 19.9mm/0.783in ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center To Center Length: 164mm/6.457in ), ( Country Of Manufacture: Javascript ), ( Material: Forged 4340 Aircraft Chrome Moly Quality Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Quantity: 6 Pieces As Showing In Picture ), ( Small End Diameter: 20mm/0.787in ), ( Torque: 26ft 35nm ), ( Weight Tolerance: Balanced To / 1 Gram In Set )
The **Maxpeedingrods 9NOJ13 Forged Connecting Rod ARP Bolts** are a premium, high-performance upgrade designed specifically for the **2.8L and 2.9L VR6 engines** found in Volkswagen s iconic **Golf, Corrado, and TUV models**, as well as later applications like the **Audi 80 and Passat B3/B4**. Engineered to meet the demands of aggressive driving, forced induction, or high-revving setups, these bolts represent a significant leap in strength and reliability over stock components, ensuring peak performance without compromising safety.
Crafted from **high-strength, forged 4340 alloy steel**, these bolts are heat-treated to an impressive **200,000 psi tensile strength**, far exceeding the modest specifications of OEM bolts, which often struggle under sustained high loads or extreme stress cycles. The **ARP (Advanced Retaining Products) design** incorporates a **fine-thread, high-climb thread form** that maximizes grip and prevents loosening under dynamic conditions, making them ideal for engines running **turbochargers, superchargers, or aggressive camshafts**. Each bolt features a **precision-machined, polished finish** to minimize friction and ensure smooth installation, while the **ARP s proprietary thread-locking compound** (applied during manufacturing) eliminates the need for additional sealants, reducing the risk of leaks or corrosion.
Beyond their structural superiority, these bolts are meticulously **matched to the 9NOJ13 forged connecting rods** a critical pairing for engines pushing beyond stock limits. The **ARP bolt pattern** is optimized for even load distribution across the rod caps, reducing stress concentrations that can lead to fatigue failure over time. Installation is straightforward, requiring only a **torque-to-yield approach** (as specified by ARP) to achieve the correct preload without overtightening, which is crucial for maintaining rod bearing integrity. Whether you're running a **naturally aspirated high-RPM setup, a turbocharged daily driver, or a competition engine**, these bolts provide the confidence of knowing your VR6 s critical components are secured by components built to withstand extreme forces.
For enthusiasts who demand nothing less than the best, the **Maxpeedingrods 9NOJ13 ARP bolts** are a no-compromise solution combining **forged durability, ARP s legendary thread technology, and a direct fit for the VR6 s demanding architecture**. Upgrade from stock and experience the peace of mind that comes with knowing your engine s foundation is held together by parts engineered for real-world performance, not just the bench.
### **Pros and Cons of Buying Maxpeedingrods 9NOJ13 Forged Connecting Rod ARP Bolts for VW VR6 (Golf, Corrado 2.8L/2.9L, TUV)**
#### **Pros:**1. **Superior Strength and Durability** Forged steel construction ensures higher tensile strength compared to standard bolts, reducing the risk of failure under extreme stress, especially in high-performance or modified engines.
2. **Precision Machining** These bolts are designed to exact specifications, ensuring proper fit and torque alignment, which is critical for maintaining engine integrity.
3. **ARP (Advanced Retaining Products) Quality** ARP bolts are known for their reliability in high-stress applications, including forced induction and high-RPM scenarios, making them a trusted choice for serious engine builders.
4. **Heat Resistance** Forged steel retains strength at elevated temperatures, which is beneficial for engines running at higher loads or with forced induction.
5. **Compatibility with TUV Standards** The TUV certification indicates that these bolts meet strict European engineering and safety standards, ensuring they are suitable for road-legal and performance applications in Europe.
6. **Reduced Risk of Bolt Stretch or Failure** Standard bolts can stretch or fail under excessive load, leading to catastrophic engine damage. Forged ARP bolts minimize this risk.
7. **Long-Term Reliability** Many users report that ARP bolts last the lifespan of the engine if properly installed and maintained, making them a cost-effective upgrade in the long run.
8. **Easy Installation** While they require proper torque specifications (typically higher than OEM bolts), they are straightforward to install with the right tools (torque wrench, ARP bolt lube, and proper technique).
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#### **Cons:**1. **Higher Upfront Cost** Forged ARP bolts are significantly more expensive than OEM or aftermarket alternatives, which may be a deterrent for budget-conscious buyers.
2. **Requires Proper Installation Knowledge** Unlike standard bolts, ARP bolts demand precise torque application (often 100-120 ft-lbs for the VR6, depending on the source) and the use of ARP bolt lube to prevent galling. Improper installation can negate their benefits or even cause damage.
3. **Not Always Necessary for Stock Engines** If the engine is running stock power (no forced induction, no extreme modifications), OEM bolts or high-quality aftermarket alternatives (e.g., M10x1.5 bolts with proper torque) may suffice, making these bolts an unnecessary expense.
4. **Potential Overkill for Mild Modifications** For engines with minor upgrades (e.g., mild turbo, minor tuning), the cost-benefit ratio of ARP bolts may not justify the expense unless the engine is heavily stressed.
5. **Limited Availability and Lead Times** Specialty parts like these may not be readily available at local auto shops, requiring online ordering, which can introduce delays.
6. **Maintenance and Reuse Challenges** ARP bolts should not be reused after removal, as they lose some of their preload. This means they must be replaced during every major service, adding to long-term costs.
7. **Potential for Over-Tightening Risks** While ARP bolts are forgiving compared to standard bolts, overtightening can still cause issues like warped crank flanges or cracked rods if torque specs are exceeded.
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### **Conclusion and Recommendation**
The **Maxpeedingrods 9NOJ13 forged ARP bolts** are an excellent choice for **high-performance, modified, or heavily stressed VW VR6 engines**, particularly those running forced induction, aggressive tuning, or high-RPM applications. Their superior strength, precision, and reliability make them a worthwhile investment for serious engine builders who prioritize safety and longevity.
However, for **stock or mildly modified engines**, these bolts may be **overkill and unnecessarily expensive**. In such cases, high-quality aftermarket bolts (e.g., M10x1.5 bolts with proper torque) or even properly maintained OEM bolts could suffice, provided the engine isn t subjected to extreme stress.
#### **Final Recommendation:** - **Buy these bolts if:**- Your engine is heavily modified (turbocharged, supercharged, high-RPM builds, or aggressive tuning).
- You prioritize maximum reliability and are willing to invest in premium components.
- You plan to keep the engine for the long term and want to minimize failure risks.
- **Avoid or reconsider if:**- Your engine is stock or only mildly modified.
- You re on a tight budget and can achieve similar safety with more affordable alternatives.
- You lack experience with high-performance bolt installations (consider consulting a mechanic or engine builder).
For the **VW VR6 (2.8L/2.9L, TUV)**, these bolts are particularly justified if the engine sees **forced induction or aggressive power levels**, as they provide a critical safety margin against bolt failure. Always follow the manufacturer s torque specifications and use **ARP bolt lube** to ensure proper preload and prevent galling.
Weight tolerance: Sets are weight matched to /- 1g. Connecting rod bushing: Bronze wrist pin bushings are fitted to each increased wear resistance. Torque 26ft 35NM. Custom-make is available.
Connecting rod handle type:beam design greatly increases strength and durability. Appearance: Provide non-logo products, also provide private customized logo. Magnetic particle inspection: Dimensional and menfolks inspected to ensure extreme reliability. Material: Forged 4340 aircraft chrome moly quality steel.
Oil hole: Pin oiling for long wrist pin life. Overall: Increased horsepower and efficiency Specifically engineered for demanding race applications Strength high while keeping lightweight in Mind. Shot preening: All rods are Preening, micro-polished to improve fatigue life.
Heat treatment: treated to increase tensile strength. CNC processing: Machined and the bores honed to exact same tolerances. Big end bores tolerance: /-.01mm.