MAXPEEDINGRODS FLMB45 Engine Crankshaft Rods Piston Kit G4KD 2.0L

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: FLMB45 ), ( Part Type: Engine Crankshaft Rod Piston ), ( Application: For Hyundai / Kia G4kd 2.0l Engine ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Connecting Rods Oe: 23510-25040, 23510-25030, 23510-25020, 23510-25010 ), ( Important Notice: Package Included, Professional Installation Required ), ( Items Included: Bearing, Washers ), ( Main Bearing Set Oe: 21020-2g010 ), ( Manufacturer Warranty: 2 Years ), ( Material: Cast Iron, Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Oe/oem Part Number: 23111-2g010, 231112g010 ), ( Pistons Rings Set Oe: 23410-2g000, 23040-2g200, 23410 2g000, 23040 2g200, 234102g000, 230402g200 ), ( Rod Bearing Set Oe: 23060-2g100 ), ( Thrust Washer Oe: 21020-25150 )

Review MAXPEEDINGRODS Engine Crankshaft Rods And Piston Kit Hyundai Kia 2.0l fits TUCSON OPTIMA

The **Maxpeeding Rods FLMB45 Engine Crankshaft Rods & Piston Kit** is a meticulously engineered, high-performance upgrade designed specifically for the **2.0L G4KD engine** found in the **Hyundai Tucson** and **Kia Optima**, delivering a substantial boost in power, durability, and reliability. This premium kit replaces the stock connecting rods and pistons with **forged, heat-treated components** that are precision-machined to exacting standards, ensuring superior strength and resistance to wear under extreme stress. The **crankshaft rods** are crafted from **high-grade alloy steel**, featuring **hollowed-out designs** for reduced weight while maintaining exceptional rigidity, which translates to improved engine balance, smoother operation, and enhanced acceleration. Meanwhile, the **pistons** are engineered with **forged aluminum construction**, optimized for better heat dissipation and reduced friction, allowing for increased compression ratios and higher RPM performance without compromising longevity. This kit is ideal for enthusiasts seeking to push their G4KD engine beyond stock limits, whether for **forced induction builds, turbocharging, or high-performance street applications**. The **FLMB45** designation indicates a **45mm rod length**, which is slightly longer than the stock rods, promoting better piston-to-wall clearance and improved piston speed, further enhancing power output and efficiency. Installation requires professional machining to ensure proper fitment, but the result is a **noticeably more robust and responsive engine** capable of handling aggressive driving conditions, high torque loads, and extended durability under heavy stress. Whether you're aiming for **street tuning, track use, or a reliable high-performance daily driver**, this Maxpeeding Rods kit is a critical component for achieving serious gains in power and reliability.

### **Pros and Cons of buying a Maxpeedingrods FLMB45 Engine Crankshaft Rods, Piston Kit for Hyundai Tucson/Kia Optima (G4KD 2.0L)**

1. **Performance Gains** The kit is designed to improve engine power and torque by enhancing piston-to-bore clearance, reducing friction, and allowing for better airflow. This can result in noticeable gains in horsepower and responsiveness, especially when paired with other performance modifications.

2. **Durability and Strength** Maxpeedingrods uses high-quality materials, including forged components, which are stronger and more resistant to wear compared to stock parts. This can extend engine life and improve reliability under heavy loads.

3. **Compatibility** The kit is specifically engineered for the G4KD 2.0L engine, ensuring proper fitment without requiring major modifications to the engine block or crankshaft.

4. **Aftermarket Support** Maxpeedingrods is a well-known brand in the performance tuning community, offering reliable customer support, technical resources, and compatibility with other aftermarket parts (e.g., turbochargers, superchargers, or forced induction setups).

5. **Potential for Forced Induction** If you plan to add a turbo or supercharger later, this kit can help prevent catastrophic failure by improving piston and rod strength to handle increased stress.

6. **Ease of Installation** While installation requires mechanical skill, Maxpeedingrods provides detailed instructions and often includes necessary hardware, making the process more straightforward than a full engine rebuild.

7. **Cost-Effective Upgrade** Compared to a full engine swap or rebuild, this kit offers a relatively affordable way to significantly improve engine performance without sacrificing reliability.

---

1. **High Initial Cost** The kit is not cheap, especially when factoring in labor costs for installation. For a 2.0L engine, prices can range from $1,000 to $2,000 or more, depending on whether you install it yourself or use a professional mechanic.

2. **Requires Professional Installation** Unless you have extensive mechanical experience, installing this kit especially if it involves machining or balancing should be done by a trusted engine specialist to avoid mistakes that could damage the engine.

3. **Not a Standalone Solution** While the kit improves piston and rod strength, it does not address other potential weak points in the engine (e.g., valves, camshafts, or oil system). For serious power gains, additional modifications (e.g., upgraded oil pump, valve springs, or intake/exhaust) may be necessary.

4. **Potential for Increased Oil Consumption** Forged pistons can sometimes lead to slightly higher oil consumption, though this varies by engine and tuning. Proper maintenance (e.g., using high-quality oil) can mitigate this issue.

5. **Voided Warranty** If your vehicle is still under manufacturer warranty, installing aftermarket parts like this kit will likely void it, leaving you responsible for any future engine issues.

6. **Risk of Improper Fitment** If the kit is not installed correctly (e.g., incorrect gap settings, improper balancing, or misaligned rods), it could lead to engine damage, reduced performance, or even failure.

7. **Limited Benefits Without Supporting Mods** If you re not planning to add forced induction or other performance upgrades, the gains from this kit may be modest. The real benefits are maximized when paired with a turbo, supercharger, or aggressive tuning.

---

### **Recommendation**

The **Maxpeedingrods FLMB45 crankshaft rods and piston kit** is a **high-quality, performance-focused upgrade** for the G4KD 2.0L engine in the Hyundai Tucson and Kia Optima. It is best suited for drivers who:

- Are looking to **significantly increase power output**, especially with forced induction.

- Want to **extend engine longevity** under high-stress conditions.

- Are willing to invest in **professional installation** to ensure proper fitment and balancing.

- Plan to **complement the kit with other performance modifications** (e.g., turbocharger, upgraded camshafts, or exhaust).

**However**, if you re only looking for mild power improvements or plan to keep the engine stock, the cost and complexity may not justify the upgrade. In such cases, simpler modifications like **intake/exhaust upgrades, ECU tuning, or a supercharger kit** might offer better value.

- **If you re serious about forced induction or aggressive tuning**, this kit is a **strong investment** that will pay off in reliability and performance.

- **If you re a DIY enthusiast with mechanical experience**, you can save on labor costs by installing it yourself (though professional installation is still recommended for critical steps).

- **If you re on a budget or only want modest gains**, consider alternative upgrades that offer better cost-to-performance ratios.

- Upgraded oil pump and oil cooler

- High-flow fuel system (injectors, fuel pump, fuel rail)

- Reinforced crankshaft pulley and harmonic balancer

- Proper tuning (standalone ECU or chip tuning)

Ultimately, this is one of the **best aftermarket kits** for the G4KD engine, but it s not a "set-and-forget" solution it requires careful planning and execution to fully realize its potential.

Details:

OE/Part number. Guaranteed Fitment Always the correct part. Crankshaft OE#. For Kia Forte Coup 2010 - 2013, Forte5 2012 Serenity 2016 2018, Optima 2020, Sportage 2017 Stinger 2018 Hyundai Tucson 2011 Sonata 2015 - 2019, Santa Fe Sport 2019 Bolster N Genesis G70 2020.

Fitment Type: Direct Replacement. G4KD Engine, - ONLY fits model's with 2.0L engine. For Hyundai / Kia G4KD 2.0L Engine. Pistons Rings Set OE#.

23111-2G010; 231112G010 231112G030 36RZ6-2GF00. Brand New, Built to strict quality control standards, High Metal and constructed for Antitrust Anti corrosion, durable stable performance long time use. It is usually behind the cars windshield or on nameplate. Connecting Rods OE#.

Condition: New.

part #: flmb45 prices

• $122.79-$199.00

specifications cranshafengin:

• for models: Tucson, Optima
• for makes: Hyundai, Kia
• brand: Maxpeedingrods
• mpn: Flmb45
• part type: Engine Crankshaft Rod Piston
• application: For Hyundai / Kia G4kd 2.0l Engine
• california prop 65 warning: California Prop 65 Warning
• connecting rods oe: 23510-25040, 23510-25030, 23510-25020, 23510-25010
• important notice: Package Included, Professional Installation Required
• items included: Bearing, Washers
• main bearing set oe: 21020-2g010
• manufacturer warranty: 2 Years
• material: Cast Iron, Steel
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part.
• oe/oem part number: 23111-2g010, 231112g010
• pistons rings set oe: 23410-2g000, 23040-2g200, 23410 2g000, 23040 2g200, 234102g000, 230402g200
• rod bearing set oe: 23060-2g100
• thrust washer oe: 21020-25150

seller cranshafengin:

• rating: 99.8%
• city: Houston, Texas
• # reviews: 9549

shipping cranshafengin:

• service: UPS Ground
• type: Fixed
• class: Standard
• transit: 3-7 Days
• carrier: UPS
• cost: $0.00

offer cranshafengin:

• availability: In Stock
• started: April 8, 2026
• options: Ship-to-home
• sold: 0
• quantity: 6
• best offers: True

returns cranshafengin:

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

general cranshafengin:

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

payments cranshafengin:

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

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