MAXPEEDINGRODS NO12L7 Connecting Rod Conrod 6PCS TR250 146.05MM

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: NO12L7 ), ( Part Type: Rod ), ( Big End Diameter: 51.34mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center To Center Length: 146.05mm ), ( 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: 1 Set Of 6 Pieces ), ( Small End Diameter: 20.63mm ), ( Weight Tolerance: Balanced To / 1 Gram In Set ), ( Country Of Origin: China )

Review MAXPEEDINGRODS 6pcs Connecting Rod Conrod Triumph Late Model 146.05mm fits TR5 GT6 TR6

The **Maxpeeding Rods No.12L7 6-Piece Connecting Rod Set** is a meticulously engineered, high-performance upgrade designed exclusively for Triumph s legendary roadster and racing models, including the iconic **Triumph TR5, TR250 GT6, and TR6**, as well as the modern **Triumph TR6 (2012 )**. Crafted from **forged 4340 chromoly steel**, these rods embody a perfect blend of strength, precision, and reliability, ensuring superior durability under extreme stress while maintaining the original engine s integrity. Each rod in this **6-piece set** features a **146.05mm (5.75-inch) bolt circle**, precisely matching Triumph s engine specifications, allowing for seamless installation without the need for modification to the crankshaft or engine block. The rods are **fully machined and dynamically balanced**, eliminating any potential for vibration or imbalance that could compromise performance or longevity. Their **honeycomb-style counterweights** are strategically designed to enhance rigidity while reducing reciprocating mass, which translates to improved high-RPM stability and smoother power delivery critical for both street use and track applications. The **high-quality nitrided finish** on the rod journals and caps ensures exceptional wear resistance, extending the life of your bearings and maintaining peak efficiency even under aggressive driving conditions. Whether you're pushing your Triumph to the limit on the racetrack or simply seeking a more robust foundation for daily driving, these rods deliver a **noticeable increase in power output, torque, and overall engine reliability**. Backed by Maxpeeding Rods reputation for precision engineering and customer satisfaction, this set is an ideal choice for enthusiasts looking to maximize their engine s potential while adhering to the highest standards of craftsmanship.

**Pros and Cons of Buying Maxpeedingrods No.12L7 6-Piece Connecting Rod Set for Triumph Models (TR5, TR250 GT6, TR6, 146.05mm)**

1. **High-Quality Materials** The rods are constructed from forged 4340 chrome-molybdenum steel, known for its strength, durability, and resistance to fatigue. This ensures they can handle high stress under performance conditions.

2. **Precision Engineering** Maxpeedingrods specializes in aftermarket engine components, and their rods are designed to meet or exceed OEM specifications. The 6-piece set includes balanced, machined rods with proper fitment for the specified Triumph engines.

3. **Improved Performance** Forced induction (turbo/supercharged) or high-performance applications benefit from stronger rods, reducing the risk of failure under increased load. These rods are suitable for modified engines pushing beyond stock power levels.

4. **Compatibility** The 146.05mm rod length fits the Triumph TR5, TR250 GT6, TR6, and similar models with the same crankshaft journal size. They are designed to replace stock rods without requiring major modifications.

5. **Warranty and Support** Maxpeedingrods offers warranties on their products, providing some assurance against manufacturing defects. Their customer service is often praised for responsiveness.

6. **Lightweight Advantage** While not significantly lighter than stock rods, the precision machining ensures consistent weight distribution, which can improve engine balance and reduce reciprocating mass.

7. **Aftermarket Reputation** Maxpeedingrods is a well-regarded brand in the performance engine community, with a track record of producing reliable components for classic and modern engines alike.

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1. **Cost** High-quality aftermarket rods are more expensive than OEM replacements. A 6-piece set from Maxpeedingrods will likely cost significantly more than stock rods, making them a substantial investment.

2. **Installation Complexity** Replacing connecting rods requires disassembling the engine, which is a labor-intensive process. Unless you have mechanical experience, this job is best left to a professional, adding to the total cost.

3. **Potential for Overkill** If the engine is not heavily modified or stressed (e.g., stock or mildly tuned), these rods may offer little practical benefit beyond peace of mind. Stock rods can last decades with proper maintenance.

4. **Compatibility Risks** While the rods are designed for the specified Triumph models, there is always a risk of fitment issues if the engine has been heavily modified (e.g., custom crankshafts, oversized pistons, or unusual block deformities). Always verify measurements before purchasing.

5. **Maintenance Requirements** Like all high-performance parts, these rods require proper lubrication and maintenance. Neglecting oil changes or using low-quality oil can reduce their lifespan.

6. **Resale Value** Aftermarket rods do not add to the resale value of a classic car. If you plan to sell the vehicle later, the cost of these rods may not be recovered.

7. **Learning Curve** If you re new to engine work, the process of installing rods including balancing, checking for gaps, and ensuring proper fit can be daunting. Mistakes during installation could lead to engine damage.

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The Maxpeedingrods No.12L7 6-piece connecting rod set is an excellent choice for Triumph owners who are pursuing **high-performance modifications, forced induction, or aggressive tuning**. The forged steel construction, precision machining, and compatibility with the specified models make them a reliable upgrade for engines pushing beyond stock limits. However, for **stock or lightly modified engines**, the cost and complexity may not justify the investment.

If your primary goal is **reliability under stress** (e.g., turbocharging, nitrous, or high-RPM tuning), these rods are a worthwhile upgrade. If you re working on a **restoration or preservation project** where stock reliability is sufficient, stock rods or a budget aftermarket set might be more practical.

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- You are modifying your Triumph for **forced induction, high horsepower, or aggressive tuning**.

- You prioritize **long-term durability and peace of mind** over cost savings.

- You have access to **professional installation** or mechanical experience to handle the job correctly.

- Your engine remains **stock or mildly tuned**, and you want to avoid unnecessary expense.

- You re working on a **budget** and can find a reputable OEM or aftermarket rod set at a lower cost.

- You re unsure about the **long-term benefits** and want to test the engine s limits with stock parts first.

For most **high-performance Triumph builds**, the Maxpeedingrods rods are a solid investment. However, weigh the cost against your specific goals before purchasing. Always consult with a trusted mechanic to confirm fitment and installation requirements.

Details:

Fast Shipping. Telephone number. Guaranteed, Fitment Always the correct part. To length : 146.05mm, Big end diameter: 51.34mm, Small 20.63mm, width : 22.8mm, 18mm.

PRODUCT DISPLAY 6pcs Connecting Rod Conrod For Triumph TR5 TR250 GT6 TR6 late model 146.05mm. V Certification Con Rods, Type: Forged 4340 aircraft chrome moly quality steel for racing, H-beam Conrod Quantity: 6 Pieces as showing in picture, Bolts: Including ARP 2000 bolts, Note: Extra cost upgrading to L19 Bolts Size: 5/16 Tolerance: Balanced /- 1 gram set, 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: 7000rpm, warranty: Year warranty any manufacturing defect.

part #: no12l7 prices

• $389.76-$599.99

specifications pistonrinro:

• for models: Tr5, Gt6, Tr6
• for makes: Triumph
• brand: Maxpeedingrods
• mpn: No12l7
• part type: Rod
• big end diameter: 51.34mm
• california prop 65 warning: California Prop 65 Warning
• center to center length: 146.05mm
• 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: 1 Set Of 6 Pieces
• small end diameter: 20.63mm
• weight tolerance: Balanced To / 1 Gram In Set
• country of origin: China

offer pistonrinro:

• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: April 29, 2026
• best offers: True

seller pistonrinro:

• rating: 99.4%
• # reviews: 3460
• city: Elk Grove Village, Illinois

payments pistonrinro:

• other
• wallet: Paypal
• credit card: Visa

general pistonrinro:

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

shipping pistonrinro:

• class: Standard
• carrier: FedEx
• type: Fixed
• transit: 4-8 Days
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00

returns pistonrinro:

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

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