MAXPEEDINGRODS HLIZ1R Beam Connecting Rod Gsr B18C5 138MM

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: HLIZ1R ), ( Big End Diameter: 48mm ), ( Big End Width: 21.77mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center Length: 138mm 5.430 ), ( Fitment Type: Performance/custom ), ( Manufacturer Warranty: 2 Years ), ( Material: Steel ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Diameter: 21mm 0.827 ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Small End Width: 23.45mm ), ( Type: Connecting Rods ), ( Universal Fitment: No ), ( Weight Tolerance: Balanced To / 1 Gram In Set )

Review MAXPEEDINGRODS I beam Connecting Rod Rods Honda Acura Gsr 138mm fits INTEGRA B18C1

The **MaxpeedingRods HLIZ1R I-Beam Connecting Rods** represent a cutting-edge upgrade for Honda and Acura enthusiasts seeking to maximize performance, durability, and reliability in their **B18C1 and B18C5 GSR engines**, particularly those with a **138mm stroke**. Engineered with precision and fortified with high-grade materials, these aftermarket connecting rods are meticulously designed to withstand the extreme stresses of high-revving, high-power applications while maintaining structural integrity under intense thermal and mechanical loads. The **I-beam construction** is a hallmark of MaxpeedingRods engineering philosophy, offering an optimal balance between stiffness and weight savings compared to traditional rod designs. This geometry minimizes bending and torsional deflection, ensuring consistent piston-to-crankshaft alignment even at peak RPM, which translates to improved valve float resistance, reduced rod bending fatigue, and enhanced overall engine longevity. Crafted from **forged 4340 steel**, these rods undergo a rigorous heat-treatment process to achieve an exceptional strength-to-weight ratio, capable of handling the demands of forced induction, nitrous oxide (NOS) applications, or aggressive turbocharging setups without compromising durability. The **138mm stroke compatibility** makes them an ideal choice for engines modified for increased displacement or those running high-performance camshafts, as they provide the necessary rigidity to support elevated piston speeds and reduced reciprocating mass. Additionally, the rods feature **precision-machined big-end bearings** and **optimized rod caps** that are held in place with **high-strength ARP bolts**, ensuring a secure and repeatable assembly process. Whether you're pushing the limits of a naturally aspirated GSR, preparing for a turbocharged build, or fine-tuning a high-revving engine for track use, the **MaxpeedingRods HLIZ1R I-Beam Connecting Rods** deliver a substantial performance advantage while maintaining the reliability expected from a premium aftermarket upgrade.

### **Pros and Cons of Buying Maxpeedingrods HLIZ1R I-Beam Connecting Rods for Honda/Acura B18C1/B18C5 (138mm)**

1. **Strength and Durability** The I-beam design distributes stress more evenly across the rod compared to traditional designs, reducing the risk of catastrophic failure under high loads. This is particularly beneficial for engines running high RPMs, forced induction, or aggressive tuning.

2. **Weight Reduction** While not drastically lighter than stock rods, the I-beam construction can be slightly more efficient in terms of weight distribution, potentially improving engine balance and reducing reciprocating mass.

3. **Compatibility with Forced Induction** These rods are designed to handle increased cylinder pressures from turbocharging or supercharging, making them a solid choice for engines modified for higher power outputs.

4. **Reputation of Maxpeedingrods** The brand is known for producing high-quality, precision-machined components for performance applications, with a strong track record in the tuning community.

5. **Improved Fatigue Resistance** The I-beam shape helps resist bending and torsional stress better than traditional rods, which can be critical for long-term reliability under extreme conditions.

6. **Aftermarket Support** These rods are widely used in the B-series tuning community, meaning parts like bolts, spacers, and gaskets are readily available.

7. **Potential for Higher RPM Reliability** The reinforced design can help the engine handle higher RPMs more safely, which is useful for engines modified for track use or high-revving applications.

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1. **Cost** High-quality aftermarket rods like these are significantly more expensive than stock rods, often costing **$300 $500 ** depending on the source and additional components needed (e.g., bolts, spacers).

2. **Installation Complexity** Replacing connecting rods requires **complete engine disassembly**, including removing the crankshaft, pistons, and cylinder head. This is a labor-intensive job best left to experienced mechanics unless you have significant engine experience.

3. **Potential for Overkill (If Not Needed)** If your engine is only lightly modified (e.g., mild turbo or naturally aspirated with stock power), these rods may be **more than necessary**, offering diminishing returns in terms of performance gains.

4. **Compatibility with Stock Components** Some users report that stock pistons, bolts, or spacers may not be ideal with these rods, requiring additional upgrades (e.g., **ARP bolts, custom spacers, or forged pistons**) for optimal performance and reliability.

5. **Learning Curve for Tuning** Simply installing stronger rods without adjusting other components (e.g., fueling, ignition timing, or cooling) can lead to **detonation or engine damage** if the engine isn t properly tuned for the increased power.

6. **Potential for Stock Crankshaft Limitations** While these rods are strong, a **stock crankshaft** may still be a weak point under extreme power. Some users opt for a **balanced or forged crank** alongside these rods for full reliability.

7. **Warranty and Return Risks** Since these are aftermarket parts, **Honda/Acura warranty may not cover them**, and returns can be difficult if installed incorrectly.

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The **Maxpeedingrods HLIZ1R I-beam rods** are an excellent choice for **serious tuners** pushing their B18C1/B18C5 engine to **high power levels (300 HP)** or **high RPMs**, especially with forced induction. They offer **superior strength, fatigue resistance, and reliability** compared to stock rods, making them a **wise investment for engines that will see heavy use or aggressive modifications**.

However, they are **not a "quick fix"** installation is **labor-intensive and expensive**, and they work best when paired with **complementary upgrades** (e.g., **ARP bolts, custom spacers, tuned fueling, and a reinforced crank**). If your engine is **stock or lightly modified**, these rods may be **overkill**, and simpler (but less expensive) upgrades like **pistons, rods, or a stronger crank** might suffice.

For **track use, turbocharged builds, or high-RPM applications**, these rods are **highly recommended**. For **casual street tuning or mild power gains**, a **balanced approach with other components** may be more cost-effective.

- **Buy if:** You are **seriously modifying your B18C1/B18C5** (turbocharged, nitrous, or high-RPM track use) and want **maximum reliability and strength**.

- **Pair with:** **ARP or custom bolts, balanced crankshaft, upgraded pistons, and proper fuel/ignition tuning**.

- **Avoid if:** You are doing **mild modifications** (e.g., mild turbo, stock power) and want to **minimize cost and complexity**.

- **Alternative Considerations:** If budget is a concern, **forged pistons stock rods with ARP bolts** or a **balanced crank** may offer a **better cost-to-performance ratio** for less extreme builds.

Would you like recommendations on additional components to pair with these rods?

Details:

Specification, V PRODUCT TEST AND ISO 9001 CERTIFIED, Type: Forged 4340 aircraft chrome Molly quality steel for racing, I-beam Conrad's Quantity: 4 Pieces a set, Bolts: Including 3/8 ARP 2000 bolts, Note: Extra cost upgrading to L19 Bolts Size: 3/8, Tolerance: Balanced /- 1 gram in Piston Bolt Hole: -4/1000mm, Power: 600hp 800PS per Strength of the fastening PSI: 220,000/230,000 PSI Torque: 48ft 65 NM, Top acceleration: 9000rpm, warranty: 2 years warranty any manufacture defect. I-Beam Connecting Rod Rods for Honda Acura B18C1 B18C5 GSR Integra R 138mm. Quick, Simple. Dimensions, to length : 5.433 138mm, Big end diameter: 48mm, Small 21mm, width : 21.77mm, 23.45mm.

Fast Shipping. Shot-preened finish to remove potential for stress risers, 6.High precision CNC machined,Precision rod cap alignment dowels, 7.Bores finished /- .005mm, 8.Balanced within 1per rod, 9. Always the correct part. Manufacturer.

G guaranteed Fitment.

part #: hliz1r prices

• $337.76-$437.01

specifications pistonrinro:

• for models: B18c1, Integra
• for makes: Honda, Acura
• brand: Maxpeedingrods
• mpn: Hliz1r
• big end diameter: 48mm
• big end width: 21.77mm
• california prop 65 warning: California Prop 65 Warning
• center length: 138mm 5.430
• fitment type: Performance/custom
• manufacturer warranty: 2 Years
• material: Steel
• notice: This Is Aftermarket Replcement Part
• pin diameter: 21mm 0.827
• pin type: Bronzed Bushing Floating Pin
• small end width: 23.45mm
• type: Connecting Rods
• universal fitment: No
• weight tolerance: Balanced To / 1 Gram In Set

payments pistonrinro:

• other
• credit card: Diners-club
• wallet: Paypal

offer pistonrinro:

• sold: 0
• availability: In Stock
• started: March 11, 2026
• best offers: True
• options: Ship-to-home
• quantity: 1

general pistonrinro:

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

seller pistonrinro:

• city: Elk Grove Village, Illinois
• rating: 98.9%
• # reviews: 833

shipping pistonrinro:

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

returns pistonrinro:

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

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