MAXPEEDINGRODS 8ZC34K Racing Conrods Connecting Rods Arp 4340 EN24 Bolts 999CC

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 8ZC34K ), ( Part Type: Rod Bolt ), ( Big End Diameter: 37mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Cetner To Center Length: 103mm ), ( Material: Forged 4340 Aircraft Chrome Moly Quality Steel ), ( Notice: This Is Aftermarket Replcement Part ), ( Quantity: 4 Pieces As Showing In Picture ), ( Small End Diameter: 17mm ), ( Weight Tolerance: Balanced To / 1 Gram In Set )

Review MAXPEEDINGRODS Racing 4340 Conrods Connecting Rods Arp Bolts Bmw 999cc fits S1000RR K46

The **Maxpeedingrods 8ZC34K Racing 4340 EN24 Connecting Rods** are a meticulously engineered, high-performance upgrade designed specifically for the BMW S1000RR K46 (999cc) engine, delivering unmatched strength, precision, and reliability for track-focused riding. Crafted from **AISI 4340 alloy steel**, these rods are forged to exacting standards, ensuring superior fatigue resistance and durability under extreme loads ideal for aggressive throttle application, high-RPM spirited riding, or full-blown racing applications. The **EN24 (24mm) bolt pattern** provides an optimal balance between strength and weight, allowing for a more rigid assembly while maintaining a competitive weight advantage over stock components. Each rod is **dynamic-balanced** to minimize vibration, ensuring smoother operation and reduced stress on the crankshaft and bearings, which is critical for maintaining peak performance and longevity in high-stress environments.

The **ARP (Advanced Race Products) bolts** included with these rods are a critical component, offering **ultra-high-strength retention** with a **12-point thread design** that maximizes grip and prevents loosening under extreme G-forces. These bolts are **heat-treated and shot-peened** for enhanced fatigue resistance, ensuring they hold under the most demanding conditions whether you're pushing the limits on the track or pushing the throttle to the redline on the street. The **precision-machined rod journals** feature a **hardened and ground** surface, reducing wear on the crankshaft and bearings while improving overall efficiency. The **forged oil holes** are strategically placed to optimize lubrication, ensuring consistent oil flow even under high-speed, high-load conditions, which is essential for maintaining peak performance and preventing premature failure.

Beyond their mechanical superiority, these rods are designed with **installation convenience** in mind. The **pre-drilled and tapped** design allows for straightforward assembly, while the **carefully engineered rod caps** ensure a perfect fit with minimal clearance, reducing the risk of binding or misalignment. The **high-quality finish** including **black oxide or nitriding treatment** not only enhances aesthetics but also provides added corrosion resistance, making these rods suitable for both track use and street applications where exposure to the elements is a concern. Whether you're looking to **increase power output, improve reliability, or simply future-proof your S1000RR for more aggressive riding**, the Maxpeedingrods 8ZC34K rods deliver a **direct, measurable performance boost** without compromising on safety or durability.

For the discerning rider who demands the best, these rods represent a **cutting-edge upgrade** that pushes the boundaries of what s possible with the K46 engine. They are not just an aftermarket replacement they are a **performance-enhancing solution** that transforms your bike into a more responsive, durable, and capable machine. Whether you're chasing lap times on the track or simply enjoying the thrill of a more engaged, high-revving engine, the Maxpeedingrods 8ZC34K connecting rods are the ultimate choice for those who refuse to settle for anything less than excellence.

### Pros and Cons of Buying Maxpeedingrods 8ZC34K Racing 4340 EN24 Connecting Rods with ARP Bolts for BMW S1000RR (K46, 999cc)

The 4340 steel used in these connecting rods is a premium alloy known for its strength, durability, and resistance to fatigue. This material is commonly used in high-performance and racing applications, ensuring reliability under extreme stress.

Maxpeedingrods specializes in aftermarket performance parts, and their rods are designed with precision machining. The EN24 (24mm) size is optimized for the BMW S1000RR s engine, balancing strength with weight reduction compared to stock rods. This can improve power delivery and reduce reciprocating mass, which may enhance engine responsiveness and high-RPM performance.

The inclusion of ARP (Advanced Racing Products) bolts is a significant upgrade over stock bolts. ARP bolts are known for their superior clamping force, thread engagement, and resistance to loosening under high stress. This reduces the risk of rod bolt failure, a critical safety concern in high-performance engines.

The EN24 rods are lighter than stock rods, which can reduce reciprocating mass. This may allow the engine to rev higher with less strain, potentially improving power output and throttle response. The weight savings can also contribute to better handling and acceleration.

These rods are specifically designed for the BMW S1000RR (K46) engine, ensuring a proper fit without requiring extensive modifications. The kit includes all necessary components, including bolts, washers, and sometimes gaskets or other hardware, simplifying installation.

For a properly built engine, these rods can contribute to better power output, especially in high-RPM applications. The reduced reciprocating mass can also improve engine breathing and reduce stress on the crankshaft and bearings.

The combination of 4340 steel and ARP bolts is designed to withstand the extreme forces generated by a tuned or forced-induction engine. This makes the rods suitable for both track use and high-mileage street applications if maintained properly.

Maxpeedingrods is a well-regarded brand in the performance aftermarket, known for its attention to detail and customer support. Their rods are often recommended by tuners and racers for their reliability and performance benefits.

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High-performance rods and ARP bolts are significantly more expensive than stock components. The cost of this kit can range well into the hundreds of dollars, depending on the exact configuration and any additional parts required (e.g., gaskets, seals). This is a substantial investment, especially for a bike that may not be heavily modified otherwise.

Replacing connecting rods is a labor-intensive process that typically requires removing the engine from the frame, disassembling the crankshaft, and carefully installing the new rods. This is not a DIY-friendly job for most riders and will require professional mechanic assistance, adding to the overall cost.

If the engine is not heavily modified or forced, the benefits of these rods may be marginal. For a stock or mildly tuned S1000RR, the power gains from lighter rods and ARP bolts might not justify the expense. The real advantages are more apparent in high-RPM or forced-induction applications.

If the rods are not properly matched to the crankshaft or if installation is not done correctly, there is a risk of damage to the engine. For example, improper rod length or imbalance can cause vibration issues or stress on the crankshaft bearings. Always ensure the rods are compatible with the crankshaft and that installation follows the manufacturer s guidelines.

High-performance rods and bolts require meticulous maintenance. Regular inspection of bolt torque, rod bearing clearance, and overall engine health is essential. Neglecting maintenance can lead to premature failure, especially under high-stress conditions.

While these rods are excellent for racing or high-performance street use, they may not offer significant benefits for casual riders or those who prioritize reliability over raw power. The S1000RR is already a high-performance bike, and the gains from these rods may be incremental unless the engine is heavily modified.

Since this is a custom, high-performance part, warranties may not cover damage resulting from improper installation or misuse. Always verify the warranty terms before purchasing, and consider whether you are comfortable with the risks involved.

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The Maxpeedingrods 8ZC34K racing 4340 EN24 connecting rods with ARP bolts are a premium upgrade for the BMW S1000RR, offering significant benefits in terms of strength, weight reduction, and safety. They are ideal for riders who are heavily modifying their engine, planning for forced induction, or competing in racing. The rods are well-suited for high-RPM applications where reducing reciprocating mass and ensuring bolt integrity are critical.

However, the cost, installation complexity, and potential overkill for stock or mildly tuned engines are significant drawbacks. These rods are not a necessary upgrade for casual riders or those who prioritize reliability over performance gains. If you are considering this kit, it is essential to weigh the potential benefits against your riding goals, budget, and the level of engine modification you plan to undertake.

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- **For Racers or Highly Modified Engines:** If you are building a high-performance or forced-induction S1000RR, these rods are an excellent investment. The combination of 4340 steel and ARP bolts will enhance reliability and performance, especially at high RPMs. Pair this upgrade with a professional engine build and regular maintenance to maximize its benefits.

- **For Mildly Modified or Stock Engines:** If your engine is stock or only mildly tuned, the gains from these rods may not justify the cost. Consider other performance upgrades that offer better returns on investment, such as exhaust systems, intercoolers, or ECU tuning.

- **Budget Considerations:** If you are on a tight budget but still want to improve your engine s reliability, focus on other high-impact upgrades first, such as ARP bolts alone (if keeping stock rods) or a high-quality crankshaft. The rods should be a later-stage upgrade once you ve addressed more critical components.

- **Professional Installation:** Regardless of your riding goals, ensure that the installation is performed by a qualified mechanic with experience in high-performance engine work. Improper installation can void warranties and risk engine damage.

In summary, these rods are a fantastic choice for serious racers or those pushing their S1000RR to its limits, but they are not a necessary or cost-effective upgrade for everyone. Carefully evaluate your needs and consult with a tuner or mechanic before making a decision.

Details:

T V PRODUCT TEST AND ISO 9001 CERTIFIED, Type: Forged 4340 aircraft chrome moly quality steel for racing, H-beam Conrods Quantity: 4 Pieces a set, Bolts size: ARP 2000 5/16 bolts, Note: Extra cost upgrading to L19 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: 7000rpm, warranty: 2 years warranty any manufacturing defect. To length : 103mm, Big end diameter: 37mm, Small 17mm, width : 21.9mm, 14.5mm. For BMW S1000RR / K46 999cc. Manufacturer.

Always the correct part. Note:Press fit, no bushing.guaranteed Fitment. Quick, Simple.

All big and small ends are finished with SUNNEN honing machine, Precision alignment sleeves positively locate the rod cap, maintaining end bore size eliminating cap walk, -100% X-rated, sonic tested , -Multi-stage heat treated, Shot preened to relieve stress, Come bronzed bushing suitable for floating piston pin. Fast Shipping.

part #: 8zc34k prices

• $375.15-$445.00

specifications pistonrinro:

• for models: S1000rr, K46
• for makes: Bmw
• brand: Maxpeedingrods
• mpn: 8zc34k
• part type: Rod Bolt
• big end diameter: 37mm
• california prop 65 warning: California Prop 65 Warning
• cetner to center length: 103mm
• material: Forged 4340 Aircraft Chrome Moly Quality Steel
• notice: This Is Aftermarket Replcement Part
• quantity: 4 Pieces As Showing In Picture
• small end diameter: 17mm
• weight tolerance: Balanced To / 1 Gram In Set

general pistonrinro:

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

returns pistonrinro:

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

payments pistonrinro:

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

seller pistonrinro:

• rating: 99.5%
• city: Elk Grove Village, Illinois
• # reviews: 32516

offer pistonrinro:

• quantity: 1
• started: April 7, 2026
• options: Ship-to-home
• best offers: True
• availability: In Stock
• sold: 0

shipping pistonrinro:

• carrier: FedEx
• transit: 2-4 Days
• class: Standard
• type: Fixed
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery

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