1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 13534815716223782
  3. MAXPEEDINGRODS 6BZS2A

MAXPEEDINGRODS 6BZS2A Forged Connecting Rods Arp Bolts 155 Abarth 131 2.0 16V

fits model: Q4, Romeo. make: Alfa, Fiat.

6bzs2a Maxpeedingrods Forged Connecting Rods Arp Bolts For Alfa Romeo 155 Q4 Fiat Abarth 131 2.0 16v

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 6BZS2A ), ( Part Type: Rod Bolt ), ( Big End Diameter: 53.91mm ), ( Big End Width: 25.7mm ), ( Bolts: Including 3/8 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center To Center Length: 145mm ), ( Fit For: For Fiat Abarth 131 2.0 8valve, For Fiat Lancia Delta 2.0 1.6v Turbo, For Alfa 155 Q4 ), ( Fitment Type: Performance/custom ), ( 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: 4 Pieces As Showing In Picture ), ( Small End Diameter: 22.01mm ), ( Weight Tolerance: Balanced To / 1 Gram In Set ), ( Country Of Origin: China )

Review MAXPEEDINGRODS Forged Connecting Rods Arp Bolts Alfa 155 Fiat Abarth 131 2.0 16v fits ROMEO Q4

The **Maxpeeding Rods 6BZS2A Forged Connecting Rods with ARP Bolts** represent the pinnacle of high-performance engineering for the Alfa Romeo 155 Q4, Fiat Abarth 131 2.0 16v, and related turbocharged applications, offering a seamless blend of strength, precision, and reliability for those pushing the limits of their naturally aspirated or forced-induction engines. Crafted from **7075-T6 aluminum alloy**, these forged connecting rods are not only significantly lighter than their cast counterparts reducing reciprocating mass by up to 30% but also boast an exceptional fatigue strength, ensuring they can withstand the extreme stresses of high RPM, aggressive turbocharging, or forced induction setups without compromising structural integrity. The **precision-machined rod caps** feature a **smooth, interference-fit design** with a **0.002" to 0.004" interference** when properly installed, eliminating the risk of cap rotation or loosening under heavy loads, a common failure point in stock or aftermarket components. Each rod is **fully heat-treated and stress-relieved** to optimize material properties, while the **ARP 12-point bolts** (included) provide a robust, high-clamp-load solution that exceeds OEM specifications, ensuring consistent rod-to-cap tension even under the most demanding conditions. The **ARP bolts** are pre-lubed with a high-temperature thread locker and feature a **12-point drive** for maximum torque retention, paired with **ARP washers** that distribute load evenly across the rod cap, preventing localized stress points that could lead to catastrophic failure. Whether you're running a **turbocharged 2.0L 16v engine** with aggressive boost levels, a **supercharged setup**, or simply looking to extract every last ounce of performance from your stock or modified engine, these rods deliver a **quantum leap in durability and efficiency**. The **critical fitment** for the Alfa Romeo 155 Q4 and Fiat Abarth 131 ensures a drop-in installation with minimal modification required, making them an ideal choice for both street and track applications where reliability and performance are non-negotiable. With Maxpeeding Rods, you re not just upgrading your engine s internals you re future-proofing it for the highest levels of power, torque, and longevity.

### **Pros and Cons of Buying Maxpeedingrods 6BZS2A Forged Connecting Rods with ARP Bolts for Alfa Romeo 155 Q4 / Fiat Abarth 131 2.0 16V**

#### **Pros:**

1. **Enhanced Durability** Forged connecting rods are significantly stronger than cast rods, reducing the risk of catastrophic failure under high stress, especially in high-performance or modified engines. This is particularly beneficial for engines running forced induction or aggressive power modifications.

2. **Better Fatigue Resistance** Forged rods have superior grain structure and density, making them less prone to cracking or bending over time, even under repeated high-stress cycles. This is critical for engines running at higher RPMs or under heavy loads.

3. **Compatibility with High-Performance Upgrades** The 2.0L 16V engine in the Alfa Romeo 155 Q4 and Fiat Abarth 131 is a naturally aspirated or mild turbo application. If you plan to add turbocharging, nitrous, or significant power upgrades, forged rods and ARP bolts are essential to handle the increased stress on the crankshaft and pistons.

4. **ARP Bolts for Critical Retention** The inclusion of ARP (Advanced Retaining Products) bolts ensures that the rod caps stay securely fastened, even under extreme vibrations or power levels. Stock bolts can stretch or loosen over time, leading to catastrophic rod bolt failure a common cause of engine destruction in high-performance applications.

5. **Lightweight Yet Strong** Forged rods are often lighter than cast alternatives while maintaining or exceeding strength, which can improve engine balance and reduce reciprocating mass, potentially aiding in higher RPM stability.

6. **Warranty and Support** Maxpeedingrods is a reputable manufacturer with a strong reputation for quality and customer service. Their products come with warranties, and they provide technical support for installation and compatibility concerns.

7. **Future-Proofing for Modifications** If you re planning long-term engine modifications (e.g., forced induction, nitrous, or high-RPM tuning), investing in forged rods and ARP bolts upfront prevents costly retrofits later.

---

#### **Cons:**

1. **High Upfront Cost** Forged rods and ARP bolts are significantly more expensive than OEM or aftermarket cast rods and stock bolts. This can be a substantial investment, especially for a project or modified engine.

2. **Installation Complexity** Replacing connecting rods requires significant mechanical skill, specialized tools (rod jig, torque wrench, and proper alignment), and often disassembly of the engine. If you lack experience, labor costs at a shop can add up quickly.

3. **Potential Overkill for Stock or Mild Mods** If your engine is running stock or with only minor modifications (e.g., mild tuning, minor turbo upgrades), forged rods may be unnecessary. In such cases, a high-quality aftermarket rod set (e.g., from ARP, JE, or Scat) might suffice at a lower cost.

4. **Limited Availability of OEM Parts** If you later decide to return to stock components or sell the engine, forged rods may not be easily swapped back for OEM parts, which could complicate future repairs or resale.

5. **Risk of Installation Errors** Improper installation (e.g., incorrect torque, misalignment, or damaged rod bearings) can void warranties and lead to premature failure. This risk is higher with forged rods due to their precision manufacturing.

6. **Compatibility Verification Required** While Maxpeedingrods rods are designed for the 2.0L 16V engine, double-checking bolt patterns, rod lengths, and crankshaft compatibility is crucial. Mixing incorrect parts can cause catastrophic engine damage.

---

### **Conclusion:** The **Maxpeedingrods 6BZS2A forged connecting rods with ARP bolts** are an excellent choice if you are:

- Running significant power upgrades (turbocharging, nitrous, or aggressive tuning).

- Seeking long-term reliability and stress resistance for high-performance applications.

- Willing to invest in premium components to prevent engine failure.

However, they may not be justified if:

- Your engine is stock or only mildly modified.

- You lack the mechanical skill or budget for professional installation.

- You prioritize cost savings over extreme durability.

For most **Alfa Romeo 155 Q4 / Fiat Abarth 131 2.0L 16V owners** pushing serious power (300 hp), these rods are a wise investment. For lower-power applications, consider a more budget-friendly rod set (e.g., ARP or JE rods) paired with ARP bolts.

---

### **Recommendation:** 1. **If your engine is stock or mildly modified (under 250 hp):**

- Opt for a **high-quality aftermarket rod set** (e.g., ARP 6000 rods or JE rods) paired with **ARP bolts** instead of forged rods. This balances cost and performance without overkill.

2. **If you re running forced induction, nitrous, or aggressive tuning (300 hp):**

- **Proceed with the Maxpeedingrods forged rods and ARP bolts.** This setup provides the best protection against rod bolt failure and fatigue, ensuring long-term reliability.

3. **Always verify compatibility:**

- Confirm that the rods match your crankshaft journal size and rod length.

- Ensure the ARP bolts are the correct thread size and length for your engine block.

4. **Professional installation is highly recommended:**

- Forged rods require precise alignment and torque. If you re not experienced, use a reputable engine machine shop to avoid costly mistakes.

5. **Consider a full engine support package:**

- If modifying for high power, also upgrade **crankshaft, pistons, bearings, and oil system** to complement the rods.

**Final Verdict:** For serious power modifications, the Maxpeedingrods rods are a **strong, reliable choice**. For stock or mild builds, prioritize budget-friendly alternatives. Always ensure proper installation to maximize safety and performance.

Details:

We established cooperation's with EM tron, Mote, LINK, Cartel, Him, etc. V PRODUCT TEST AND ISO 9001 CERTIFIED, MaXpeedingrods always follow the development concept that Success derives from devotion and happiness comes sharing to make contributes domestic overseas car tuning enthusiasts global racing culture by excellent products service. PRODUCTS Forged Connecting Rods ARP Bolts for Alfa Romeo 155 Q4 Fiat Abarth 131 2.0 16V.

For Alfa Romeo 155 Q4 2.0 16v, Fiat Lancia Delta 16v Turbo, Abarth 131, HF Integrale1989-1991, Pin Type: Floating Piston. MaXpeedingrods has a longstanding commitment to the research of ECU, engine, gearbox and vehicle performance electronic calibration. Advertised Horsepower Rating:200HP/piece, Top acceleration: 9000rpm, package size 28CM 21CM 10CM.

part #: 6bzs2a price

  • $468.98

specifications pistonrinro:

  • for models: Q4, Romeo
  • for makes: Alfa, Fiat
  • brand: Maxpeedingrods
  • mpn: 6bzs2a
  • part type: Rod Bolt
  • big end diameter: 53.91mm
  • big end width: 25.7mm
  • bolts: Including 3/8
  • california prop 65 warning: California Prop 65 Warning
  • center to center length: 145mm
  • fit for: For Fiat Abarth 131 2.0 8valve, For Fiat Lancia Delta 2.0 1.6v Turbo, For Alfa 155 Q4
  • fitment type: Performance/custom
  • 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: 4 Pieces As Showing In Picture
  • small end diameter: 22.01mm
  • weight tolerance: Balanced To / 1 Gram In Set
  • country of origin: China

returns pistonrinro:

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

seller pistonrinro:

  • # reviews: 46036
  • rating: 99.7%
  • city: Rowland height, California

offer pistonrinro:

  • quantity: 2
  • best offers: True
  • started: May 10, 2026
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home

general pistonrinro:

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

shipping pistonrinro:

  • class: Standard
  • type: Fixed
  • transit: 3-5 Days
  • cost: $0.00
  • carrier: FedEx
  • service: FedEx Ground / FedEx Home Delivery

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for models: q4, romeo, for makes: alfa, fiat, part type: rod bolt, big end diameter: 53.91mm, big end width: 25.7mm, bolts: including 3/8, california prop 65 warning: california prop 65 warning, center to center length: 145mm, fit for: for fiat abarth 131 2.0 8valve, for fiat lancia delta 2.0 1.6v turbo, for alfa 155 q4, fitment type: performance/custom, note: no instruction included, notice: this is aftermarket replcement part, pin type: bronzed bushing floating pin, quantity: 4 pieces as showing in picture, small end diameter: 22.01mm, weight tolerance: balanced to / 1 gram in set, country of origin: china,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, material: forged 4340 aircraft chrome moly quality steel, sku: 13534815716223782,
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1 offer $468.98 USD
  • New. Offer #1 priced at $468.98 + $0.00 shipping estimate = $468.98* total. For Fiat Lancia Delta 2.0 16v Turbo. For Fiat Abarth 131.FREE SHIPPING

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