CALL US (855) 998-8726 Skunk2 Racing Ultra Series Connecting Rod Set (306-05-9150)
504.99504.991
Skunk2 Racing Ultra Series Connecting Rod Set (306-05-9150)152.00mm Length; 438.1 Grams; Rated to 700HP; X-Beam; Incl. 3/8 ARP2000 Bolts/Lube; 4340 Chromoly Steel; Set of 4;
4340 Chromoly; X-Beam Design w/3/8in. ARP2000 Bolts-152.00mm Length w/OEM Journal Width-Rated to 700hp. Skunk2 Racing Ultra rods are manufactured from forged 4340 Chromoly steel then heat treated for ultimate strength. Skunk2 Racing Ultra rods are an x-beam style which greatly reduces weight while maintaining strength by removing material and ...
Skunk2 RacingSkunk2 Racing Ultra Series Connecting Rod Set (306

Skunk2 Racing

Skunk2 Racing Ultra Series Connecting Rod Set (306-05-9150)

152.00mm Length; 438.1 Grams; Rated to 700HP; X-Beam; Incl. 3/8 ARP2000 Bolts/Lube; 4340 Chromoly Steel; Set of 4;

$494.99

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Details
4340 Chromoly; X-Beam Design w/3/8in. ARP2000 Bolts-152.00mm Length w/OEM Journal Width-Rated to 700hp. Skunk2 Racing Ultra rods are manufactured from forged 4340 Chromoly steel then heat treated for ultimate strength. Skunk2 Racing Ultra rods are ... read more
  • Designed for maximum performance
  • Ensure a perfect fitment with all aftermarket pistons
  • Magna-fluxed for maximized integrity
  • Shot-peened for reduced fatigue
  • Balanced +/- 1 gram
  • Forged from 4340 chromoly steel
  • Bronze wrist pin bushings for increased wear resistance
  • Dual oil passages for additional lubrication and cooling
  • Designed using comprehensive heat-treating, tempering, and shot-peening processes for exceptional durability
  • Manufactured from two-piece forgings for optimal grain orientation
  • H-beam design for ultimate strength-to-weight ratio
  • Precision-machined, heat-treated, forged 3/8-Inch ARP2000/Skunk2 bolts that withstand clamping loads up to 220,000 psi
  • FEA (Finite Element Analysis) for high-stress points determination
  • Backed by a one-year warranty
  • For more questions about this product, please Contact Us
Description

4340 Chromoly; X-Beam Design w/3/8in. ARP2000 Bolts-152.00mm Length w/OEM Journal Width-Rated to 700hp. Skunk2 Racing Ultra rods are manufactured from forged 4340 Chromoly steel then heat treated for ultimate strength. Skunk2 Racing Ultra rods are an x-beam style which greatly reduces weight while maintaining strength by removing material and strategically shaping the beam. This results in a very high strength to weight ratio and is great for circuit and drag racing. The ribs / straps on the pin end increase strength and stiffness under high loads and engine speeds. The step on the big end (crank journal side) is for strength and rigidity to maintain roundness.

Features

  • Designed for maximum performance
  • Ensure a perfect fitment with all aftermarket pistons
  • Magna-fluxed for maximized integrity
  • Shot-peened for reduced fatigue
  • Balanced +/- 1 gram
  • Forged from 4340 chromoly steel
  • Bronze wrist pin bushings for increased wear resistance
  • Dual oil passages for additional lubrication and cooling
  • Designed using comprehensive heat-treating, tempering, and shot-peening processes for exceptional durability
  • Manufactured from two-piece forgings for optimal grain orientation
  • H-beam design for ultimate strength-to-weight ratio
  • Precision-machined, heat-treated, forged 3/8-Inch ARP2000/Skunk2 bolts that withstand clamping loads up to 220,000 psi
  • FEA (Finite Element Analysis) for high-stress points determination
  • Backed by a one-year warranty
  • Skunk2's engineers spent nearly three years developing and testing its straight H-beam rod design. The results are one of the strongest beam configurations available, capable of handling more than 900 hp. Engineers made use of FEA (Finite Element Analysis) to determine high-stress points and implemented features to reduce wear and increase strength. Skunk2's straight design distributes stress across a larger area when compared to tapered rods, providing additional support where necessary.

    Alpha Series Rods are manufactured from two-piece forgings, resulting in optimal grain orientation along the rod cap for increased strength. By orienting the metal’s grain in the direction of stress along the rod cap, perpendicular to the stress exerted along the beam, strength is significantly increased. Skunk2's two-piece forgings provide a precision-tight fit between the rod’s cap and its beam without resorting to the brittle materials required by other processes.

    Alpha Series Rods also feature dual oil passages at their pin ends, providing additional lubrication and cooling, which leads to an even stronger, more durable rod. Unlike other designs, Skunk2's carefully positioned, offset oil passages help deliver lubrication around the entire wrist pin, during each phase of the engine cycle.

    Connecting rod bolts endure more stress than any other engine fastener. Each Alpha Series Rod features high-quality, Skunk2-branded, 3/8-inch ARP2000 bolts. ARP2000 rod bolts are forged, heat-treated, precision-machined, and capable of clamping loads as high as 220,000 psi. Precision-machined, bronze wrist pin bushings are also fitted to each Alpha Series Rod for increased wear resistance, and are compatible with most aftermarket pistons without additional machining.

    Not all forged H-beam rods are the same. Only Skunk2's Alpha Series Rods feature our unique design, precision machining, and are capable of handling more than 900 hp, all at an economical price.

California Proposition 65: This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer, and Bisphenol A which is known to the State of California to cause birth defects or other reproductive harm.
Application List
ImageSKU / Part NoApplicationDetailStockPriceAdd to Cart
306-05-9150 306-05-9150Acura TSX (2004) - Base2.4L L4 FI GAS | K24A2 | Naturally AspiratedIn Stock$494.99BUY
+ -
306-05-9150 306-05-9150Honda Civic (2012) - Si2.4L L4 FI GAS | K24Z7 | Naturally Aspirated | Coupe/SedanIn Stock$494.99BUY
+ -
Specifications
Series
Ultra
Rod Length
152.00 mm
Bolt size
3/8"
Bolt Material
ARP2000
Quantity
Set of 4
Material
4340 Chromoly Steel
Design
X-Beam
Rated
To 700 HP
Logo
Laser Etched Skunk2
Wrist Pin Bushing Material
Bronze
Return Policy

At JM Auto Racing we make returns and other client services as easy as possible. Our mission is to provide you with the best products and the best service in the automotive industry. We understand that sometimes, clients change their minds about products that they order or simply do not need them anymore. We also know that clients are cautious about terms and conditions since they are often tricky and misleading. Our goal is to make the return or exchange process trustworthy and as simple as 1-2-3.

Returns & Exchanges
If you are not satisfied with your purchase for any reason, we will be happy to accept a return for a refund or exchange on products in new/unused condition within 30 days of delivery. For orders placed during the holiday season from November 15th to December 31st, the return period is extended to 60 days. The following rules apply:

  • All returns and exchanges must be made via our Return Procedure with a valid & signed RMA form.
  • Returns will have a flat 15% restocking fee.
  • Product(s) must be in new condition and in the original packaging (please do not assemble, install, or modify the product in any way). In the event of fitment, flaw or defect pictures may be necessary to complete your request.
  • Any product that was used or fully/partially installed is non-returnable.
  • In some cases, return of the physical product may not be required. For these products, instructions will be provided on how to process a field destroy or dispose of the original item.
  • The few exceptions for items that cannot be returned include:
    • Items classified as “special order” or “made to order”
    • Custom Wheels & Tires Packages
    • Electronics
    • Any non-EPA compliant product including but non limited to catless test pipes, downpipes, headers and high flow cats. We will try to make as many accomadations as possible however a 25% restocking fee will apply. Please contact us to learn more.
  • To start your return please click HERE

Cancellations
We all know that things happen a people change their mind as soon as the purchase things. We take pride in how quickly we get things out the door and with 4 warehouses to ship from plus stock owned at our manufacturers, that speed is always increasing. This is why we only except full cancellations within 30 minutes of placing an in stock order. This helps us ensure your package gets out on the truck immediately or can be flagged before it goes through the packaging process. For orders that are not in stock or special order, we allow 24 hours. Cancellations can be done online by following the instructions found HERE or by emailing [email protected] ,

Your request will be processed as quickly as possible, but please note that sometimes products ship quicker than expected. After 24 hours, or after an out of stock item has been confirmed, fees will apply to all cancellations with the exception of Special Order items, made to order items or custom built items; which can not be cancelled after the 24 hour period. Items confirmed on reserve or pre-ordered are subject to a 10% cancellation fee.

Cancellations are subject to a 10% cancellation fee. This fee is not to rip you off in any way. When you place an order, we lose 3% due to credit card processing, and also another 3% to credit your account. The other 4% is much less then what is needed to cover all other costs and expenses lost by cancelling an order, that was already processed. This fee is will only be imposed on orders that have not shipped. If a special order has been placed, such as pistons, turbo's, etc., and the items are built and ready to ship out, and a cancellation is requested, a 25% cancellation fee will be imposed IF possible to be cancelled.

  • To start your cancel please click HERE

What are my shipping fees?
For orders delivered within the continental US where reason for return isn't a result of a JM Auto Racing error, the cost of the initial shipping charge and a return fee will be deducted from your refund. A prepaid shipping label(s) will be provided.
Freight, international & non-continental US returns are accepted, however coordination of return shipping is the responsibility of the client. In the event an error is made by JM Auto Racing, a return shipping label will be provided.

Сore deposits
Some products sold on JM Auto Racing include a core deposit. These parts have a deposit that is charged upon purchase and fully refunded upon the return of the core. Cores must be in rebuildable condition and matching vehicle application to the product sold. Once the product is received and inspected, the deposit will be refunded to your original form of payment. Note: Product cores returned that are not fully assembled or are not the unit that was removed from the vehicle, will not be refunded and the core will be discarded. Detailed instructions on Core Deposit Returns can be found here.

Defective, damaged, or incorrect products
We all know that accidents happen sometimes. If your product(s) arrive defective, damaged, or simply incorrect, please contact our customer service department as soon as possible. Please do not attempt to use, install, modify, or repair the part! We will send you a replacement part and provide you with a prepaid return label to return the defective part. In some instances, return of the product may not be required. Products must be returned to us within 30 days. If the damage was caused by a shipping courier, we will schedule a damage pick up by the courier. Photos of the damage, defect, or fitment issue may be requested in order to correctly process your request. For items mispackaged or missing, returns and replacements will be handeled as warranty requests, subject to manufacturer involvement and normally handled within 24-48 hours. Please note that products must be in the original packaging and there are additional requirements for products that ship freight.

LTL and Freight Shipments will cover the delivery of most oversized items, including but not limited to, body kits, hoods, trunks, spoilers, doors, roll cages. Items should be thoroughly inspected at time of delivery. Any damage NEEDS to be notated on the Bill of Lading prior to the driver leaving for an insurance to be valid. If damage, is not noted, the insurance is voided out and will need to be dealt with between you and the shipping carrier.

Billing, refunds & credits
Payment for orders placed using PayPal of Affirm will be captured as soon as the order has been successfully placed. Payments for orders placed using a debit or credit card will be authorized only and captured upon shipping. What does this mean? If your order is in stock, it will be charged normally. For out-of-stock items arriving within 30 days, you may see the authorization temporarily fall off. The funds will be placed back into your account and you won't see the pending charge from us. Once the item ships, you will see the funds deducted and the charge posted to your account. For out-of-stock items after 30 days, the above will take place, however we will have to recharge your card once the item is ready to ship.

Refunds for returned products are issued with 3-5 business days once they are received by our warehouse and inspected. Refunds will be issued via the same payment method originally used to place the order (Credit Card, PayPal, Google, Affirm, Check). All returns, where JM Auto Racing is not at fault, will have 15% restocking fee less than cost of freight. Free shipping items will have the initial freight fees deducted from the final refund. Shipping is only free if you keep the item you purchased. Some items will have a higher restocking fee. This information will be revealed to you up front upon requesting a return. Once the refund has been issued a confirmation email will be sent. Please allow an additional 5-7 days for the credit to appear on your account.

Shipping & delivery
To ensure a fast and safe delivery we use FedEx, DHL, Ontrac, USPS, & UPS Ground/Air shipping services. Available shipping methods may vary for different type of products and shipping destinations. Most products in stock ship same day, or within 1 business day after which its delivery can be tracked via tracking number sent to your email. For custom or made to order items shipping time varies as they may have to be manufactured, painted, embroidered, or assembled.

Please keep the following in mind:

  • Products that are oversized must ship truck freight / LTL which differs from ground shipments. NOTE: These oversized items require inspection and a signature upon delivery. For more information on freight shipping click here.
  • Shipments to Canada are treated as all other international shipments. It is the recipient's responsibility to pay all applicable duties, taxes, & brokerage fees. Detailed Info can be found here here.
  • Shipments to HI, AK, PR, Guam, Virgin Islands, APOs, & Canada might require extra shipping charges. International shipping quotes will be e-mailed to the customer before the credit card is charged.
  • Oversized items such as hoods, body kits, bumpers, tonneau covers, roofs, trunks and spoilers may require additional postage that is not displayed on the website. You will be contacted prior to the item shipping to confirm.

To request an international shipping quote before placing an orderIf you would like special shipping arrangements, please contact us via live chat, email or call us at 1.855.998.8726

Disclaimer
In effort to provide our valued clients with the most up to date and accurate information, JM Auto Racing is continuously implementing real-time updates to our online superstore. Due to the immediate nature of these updates the correction of any errors and/or omissions can happen at any time without prior notice. This information may include but is not limited to pricing, availability, suggested use, fitment, compatibility, and warranties.

JM Auto Racing is not responsible for any additional charges, labor, loss, or damage incurred as a result of information, correct or incorrect, referenced or products purchased from JM Auto Racing. While we work to avoid any errors or omissions that may appear on the JM Auto Racing website, we do reserve the right to cancel any undelivered orders based on inaccurate information. more details

Additional Info

All Skunk2 products are carefully planned and designed in-house using the latest computer simulation and modeling techniques, followed by careful testing in controlled laboratory environments using state-of-the-art equipment. Each product is then subjected to rigorous dyno, street, and race track testing to ensure proper performance in the most extreme conditions. For these reasons, top street cars and race cars worldwide rely on Skunk2 products.

As part of Skunk2's commitment to developing industry-leading products, we've remained actively involved in various forms of motorsports through technical partnerships, sponsorships, as well as with our own race vehicles for more than 15 years. We've gone on to secure a number of drag racing and road racing records and championships, including earning the title of the world's first 10-second naturally aspirated Honda. Racing provides us with the data necessary to produce high-performance parts utilizing innovative designs, advanced metal alloys, cutting-edge manufacturing methods, and stringent quality-control measures.

Driven by the desire to make things go faster, Skunk2's staff is comprised of industry leaders, racers, and enthusiasts who are passionate about what they do and understand what other enthusiasts want. Our perspective is shaped by real-world racing experiences as well as by practical science, and that's precisely what makes Skunk2 products so good. Firmly grounded in our understanding of engineering, we make every effort to embrace advanced technology. Our goal is to make performance and technology accessible to other enthusiasts through innovative manufacturing techniques.

Since 1994, we've released a number of industry-leading products, including the first cast aluminum, high-performance intake manifold, cutting-edge composite fuel rails, and valvetrain components made from premium materials. Skunk2 is acclaimed as being the first U.S.-based sport compact parts manufacturer to offer CNC-machined, adjustable cam gears in 1995 as well as billet camshafts in 1999. As a result of continually pushing our engine development capabilities in the racing world, we've discovered a number of exciting "power secrets" that are incorporated into every Skunk2 product.

Today we continue our tradition of creating leading-edge products through a state-of-the-art engineering and R&D department as well as through extensive engine development and testing both on the race track and the street.

JM AUTO RACING carries a wide range of performance auto parts, as well as car accessories and truck accessories. Whether it be body styling such as body kits, hoods, trunks, splitters, spoilers, and carbon fiber items; performance auto parts and car accessories such as turbo kits, superchargers, intakes, exhaust systems, cam gears, clutches and flywheels; suspension accessories such as coilovers, shocks, struts, springs, sway and strut bars, alignment kits and tie bars; or lighting accessories such as projector and euro headlights, HID kits, bumper lights, taillights, brake lights and undercar lighting, JM AUTO RACING has it all. Don't see what you're looking for? No problem. Give us a call or send us an email because chances are JM AUTO RACING has the items in stock.

Warranty

WARRANTY:

Skunk2 Racing warrants all products to be free from defects in materials and workmanship for normal use and service, regardless of mileage, for a period of time not to exceed 12 months from the original date of retail purchase. Parts returned must be determined by Skunk2 Racing to be defective prior to any warranty credit or replacement is issued. Skunk2 Racing's obligation under warranty shall be limited to repairing or replacing, at its discretion, any part proven defective. The customer must prepay transportation charges. Final determination of the suitability of the products for the use contemplated by the buyer is the sole responsibility of the buyer.

Skunk2 Racing shall not be liable for any special, direct, indirect, incidental or consequential damages that might be claimed as a result of the failure of any part, including claims for delay, loss of profits, or labor. Skunk2 Racing shall not be liable for any damages or injuries to persons or property resulting from improper installation or misuse of any part subject to this warranty. There are no other warranties expressed or implied extending beyond those set forth above.

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