MAXPEEDINGRODS GTUHL1 Billet Crankshaft Lotus Cam Balanced 4340 EN24 54MM

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: GTUHL1 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Country Of Origin: China ), ( Important Notice: Package Included, Professional Installation Required ), ( Journal Type: Narrow Pin ), ( Main Journal Diameter: 54mm ), ( Nose Design: X-flow Specific ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part., California Prop 65 Warning. ), ( Rods Center Length: 122.58mm ), ( Rods Journal Diameter: 49.22mm ), ( Stroke: 72.75mm ), ( Type: Crankshaft )

Review MAXPEEDINGRODS 4340 Billet Crankshaft Lotus Cam Fully Balanced 54mm Main fits TWIN

The **Maxpeedingrods GTUHL1 4340 EN24 Billet Crankshaft** is a meticulously engineered, high-performance component designed specifically for Lotus Twin Cam engines seeking enhanced durability, reliability, and raw power. Crafted from **AISI 4340 alloy steel**, this billet crankshaft is forged from a single, high-grade billet blank, ensuring superior strength, fatigue resistance, and precision machining throughout every critical journal and main bearing surface. The **EN24 (24mm) stroke** is optimized for the Lotus Twin Cam s displacement, delivering a balanced blend of torque and revving capability while maintaining structural integrity under extreme loads. Each crankshaft undergoes **multi-stage heat treatment**, including **stress relieving, hardening, and tempering**, to achieve an ideal hardness of **30-35 Rc**, striking a perfect balance between wear resistance and toughness. The **54mm main journals** are generously sized to support high RPM and aggressive camshaft profiles, while the **70mm rod journals** ensure robust piston-to-rod articulation, reducing the risk of catastrophic failure even under extreme stress. Precision-ground and dynamically balanced to **OEM or tighter tolerances**, this crankshaft eliminates vibration and ensures smooth operation across the entire rev range. Whether applied to a naturally aspirated or forced-induction Lotus Twin Cam, this billet crankshaft transforms stock reliability into a fortress of strength, allowing for aggressive tuning, high-lift cams, or forced induction without compromising longevity. Built to withstand the demands of serious performance applications, the **Maxpeedingrods GTUHL1** is the ultimate upgrade for enthusiasts seeking a crankshaft that matches the legendary pedigree of the Lotus Twin Cam combining heritage engineering with modern, race-proven durability.

### Pros and Cons of buying a Maxpeedingrods GTUHL1 4340 EN24 Billet Crankshaft for a Lotus Twin Cam (Balanced 54mm)

1. **Material Quality** The crankshaft is forged from **4340 chromoly steel**, a high-strength alloy known for durability, fatigue resistance, and ability to handle high RPMs and stress. This material is superior to cast cranks in terms of longevity and performance.

2. **Billet Construction** Being a **billet crank**, it is machined from a solid billet of steel rather than cast, which eliminates internal voids and inconsistencies found in cast parts. This results in a stronger, more uniform structure.

3. **Balanced for 54mm Rods** The crank is **pre-balanced for 54mm rods**, ensuring optimal harmonic balance in your Twin Cam engine. This reduces vibration, improves smoothness, and can enhance longevity of related components like the rod bearings and main bearings.

4. **Lotus Twin Cam Compatibility** Designed specifically for the **Lotus Twin Cam architecture**, the crankshaft is engineered to fit the engine s rod journals, main journal spacing, and stroke requirements. This minimizes clearance issues and ensures proper fitment.

5. **High-Strength EN24 Counterweights** The **EN24 steel counterweights** are harder and more wear-resistant than traditional cast iron or mild steel counterweights. This reduces the risk of counterweight failure, which can be catastrophic in high-performance applications.

6. **Potential for Increased Power** A stronger crankshaft can support higher RPMs and torque, allowing for more aggressive tuning (e.g., forced induction, nitrous, or high-compression builds). This can translate to better power output if paired with the right supporting components.

7. **Aftermarket Support and Tuning Potential** Since this is an aftermarket part, it opens the door for further modifications, such as **rod length adjustments, stroke changes, or custom balancing**, depending on your goals.

8. **Warranty and Reputation** Maxpeedingrods is a well-regarded manufacturer in the high-performance aftermarket, particularly for Lotus and other classic British engines. Their products often come with warranties, and their reputation for quality can provide peace of mind.

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1. **Cost** Billet cranks are significantly more expensive than stock or aftermarket cast cranks. The price point may be prohibitive for casual or budget-conscious builders, especially when considering the full cost of a rebuild (including rods, bearings, seals, etc.).

2. **Installation Complexity** Replacing a crankshaft requires a full engine teardown, which can be labor-intensive and time-consuming. If you re not experienced with engine work, this may require professional help, adding to the cost.

3. **Requires Supporting Modifications** A stronger crankshaft is only as good as the rest of the engine. If other components (e.g., rods, bearings, block, or oil system) are worn or inadequate, the crankshaft may not perform optimally or could be at risk of failure. Upgrading the entire drivetrain may be necessary for full benefits.

4. **Potential for Overkill** If your engine is not heavily modified or used for extreme performance (e.g., drag racing, high-RPM street driving), the stock crankshaft may already be sufficient. A billet crank is an overhaul for most casual drivers or lightly tuned engines.

5. **Balancing and Tuning Considerations** While the crank is balanced for 54mm rods, further tuning (e.g., rod length changes, harmonic balancer adjustments) may still be needed to optimize performance. This requires additional expertise or testing.

6. **Limited Stock Availability** Aftermarket cranks, especially billet ones, may not always be in stock and could have long lead times. This could delay your project if you re relying on it.

7. **Risk of Damage During Installation** Improper handling during installation (e.g., dropping the crank, incorrect alignment, or mishandling the bearings) could lead to premature failure. This risk is mitigated by careful installation but adds another layer of complexity.

8. **Not a "Quick Fix"** Unlike swapping a camshaft or exhaust, a crankshaft replacement is a major undertaking. It s not a solution for power loss caused by other issues (e.g., poor compression, fueling problems, or mechanical wear).

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The **Maxpeedingrods GTUHL1 4340 EN24 billet crankshaft** is an excellent choice for Lotus Twin Cam owners who are pursuing **high-performance builds, forced induction, or extreme reliability**. Its superior material, billet construction, and compatibility with 54mm rods make it a strong upgrade for engines that demand more power, longevity, and smoothness. However, it is not a necessary upgrade for stock or lightly modified engines, and the cost and labor involved may not justify the investment for casual drivers.

If your goals include **serious tuning, racing, or restoring the engine to peak condition**, this crankshaft is a worthwhile investment. For most street-driven or mildly modified Twin Cams, a stock or high-quality aftermarket cast crank may suffice, and the funds could be better spent on other performance upgrades (e.g., camshafts, fueling, or suspension).

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- You are building a **high-performance Twin Cam** (e.g., for forced induction, nitrous, or high-RPM street driving).

- You are already committing to a **full engine rebuild** and want the strongest possible crankshaft.

- You prioritize **long-term reliability** and are willing to invest in premium components.

- Your engine will be paired with **upgraded rods, bearings, and a robust oil system** to support the crankshaft.

- Your engine is **stock or lightly modified** and not subjected to extreme stress.

- You are on a **tight budget** and can achieve similar gains with other upgrades (e.g., better cams, fueling, or suspension).

- You lack the **experience or resources** to properly install and support the crankshaft (e.g., no access to a machine shop for balancing or rod length adjustments).

- You are not planning to **push the engine to its limits** in the near future.

For most Lotus Twin Cam owners, this crankshaft is a **premium upgrade** rather than a necessity. If you decide to proceed, pair it with a **full engine support package** (e.g., ARP rods, high-quality bearings, a harmonic balancer, and proper lubrication) to ensure optimal performance and longevity.

Details:

Billet Twin Turbos for BMW N54 335i 335xi 135i 3.0L 2007 2008 2009 2010 2011. For Ford Lotus Twin Cam 1600cc Crankshaft, for Elan, Corina,Lotus Seven, Escort, Europa. Fast Shipping. .

Material: 4340 EN24 Aircraft Chrome Molly Billet Steel, Flywheel / Flex plate bolts pattern: 12, Rods journal diameter: 49.22mm, Main 54mm, length : 122.58mm, Stroke: 72.75mm, Max HP: 1800 HP, Feature: Fully Balanced, Note: With an adapter may be fitted to convert for BD use.

part #: gtuhl1 prices

• $209.99-$539.99

specifications cranshafengin:

• for models: Twin
• brand: Maxpeedingrods
• mpn: Gtuhl1
• california prop 65 warning: California Prop 65 Warning
• country of origin: China
• important notice: Package Included, Professional Installation Required
• journal type: Narrow Pin
• main journal diameter: 54mm
• nose design: X-flow Specific
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part., California Prop 65 Warning.
• rods center length: 122.58mm
• rods journal diameter: 49.22mm
• stroke: 72.75mm
• type: Crankshaft

returns cranshafengin:

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

offer cranshafengin:

• best offers: True
• availability: In Stock
• sold: 0
• quantity: 1
• started: June 10, 2026
• options: Ship-to-home

payments cranshafengin:

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

shipping cranshafengin:

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

general cranshafengin:

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

seller cranshafengin:

• # reviews: 11095
• rating: 99.8%
• city: Rowland height, California

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