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Killer B Motorsport 02-14 WRX / 04-21 STI 4-1 Holy Header Exhaust Manifold DIY Rotated | HH-DIY

Killer B Motorsport 02-14 WRX / 04-21 STI 4-1 Holy Header Exhaust Manifold DIY Rotated | HH-DIY

Killer B

Part Number: klbHH-DIY

Sale Sold out
Regular price $1,299.00 USD
Regular price $1,299.00 USD Sale price $1,299.00 USD
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Financing available starting $40.59 /month and as low as 0% APR.

Contact us for availability! Free shipping on orders over $199 or with Turbocharged Membership

Description

The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase power in the mid to high RPM range. Short as possible primaries with a single secondary significantly decrease header volume allowing exhaust gas pressure to build quickly. Symmetrical 4-1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect faster spool up time compared to long primary/double secondary designs. A difference you will immediately notice in throttle response and the ability to hold more power higher into the revs.

This is a DIY kit, you will have to construct the uppipe to your needs! If you are looking for a direct replacement header please use Killer B's other header listings which can be found on our site.


Features include:

  • Short Equal Length Primaries. The shortest possible length primaries you can have on an Equal Length header. Short means less header volume and quick spool up.
  • Symmetrical Primary Design. All primaries have a similar tube length AND bend geometry. This keeps the pulse velocities high and consistent compared to equal length headers with different (non-symmetrical) primary tubing geometry. 
  • Smooth Mandrel Bends. All of the bends utilize a mandrel for smooth non-restrictive flow. Not only that, they use the largest bends possible at every location. It would be cheaper to use 2” bends everywhere, like others do, but that’s not going to give the best performance. 
  • Thick Walled 321 Stainless Steel Construction for Long Life. 321 is alloyed with titanium, costs more, a lot more, but it’s the ideal material for high temperature turbocharged applications. Would 304 stainless work, yes, but the temperatures on turbocharged cars can exceed the limits of 304 stainless enough to make them brittle and crack. 321 stainless steel has higher strength and toughness at elevated temperatures. It was developed by the aircraft industry specifically to address 304 stainless manifolds that were cracking. Killer B Motorsport is the only company that manufactures full 321 headers. 
  • High Heat Retention. 321 stainless steel conducts less heat than 304 stainless steel. The short primaries and properly sized secondary’s also pull less heat from the exhaust gasses increasing turbine efficiency. Large tubing headers expose the exhaust gasses to more surface area transmitting more heat and reducing exhaust energy. You can also ceramic coat or wrap the headers (and keep the warranty) without exceeding the temperature range like you can with 304 stainless. 
  • Up-Pipe to Manifold V-Band Included (not welded) 
  • Includes Non-Trimmed or Welded 321 Stainless Steel Up-Pipe. 
  • No Turbo Flange Provided 
  • Works with OEM EJ25 Oil Pans, and Killer B Motorsport Performance Aluminum Oil Pan! 
  • No Accommodations for External WasteGate Included 
  • Allows placement of Up-Pipe to Accommodate nearly any Rotated Turbocharger setup 
  • DIY Reduced cost!
  • Works with OEM EJ25 Oil Pans, and Killer B Motorsport Performance Aluminum Oil Pan! 
  • Made in the USA and Killer B quality!
  • NOTE: 2002-2005 WRX Requires EJ25 Oil Pan
  • NOTE: May require slight modifications to the stock oil cooler for 06-07 WRX and Forester XT models. Some models may require modification to the stock fan shroud.
Shipping & Delivery

Due to the Chinese New Year, the following brands may or may not be impacted and experiencing delays till 2/9/2022 for the shipments that's coming from Asian Area directly: BC Racing Idoing JDMuscle RES Reshingu Rexpeed Yellow Speed Racing

Returns
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately, we can’t offer you a refund or exchange. Please send an email to sales@jdmuscleusa.com or use our return portal located at the top of the page to set up a return.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Additional non-returnable items:

  • Giftcards
  • Special-ordered items, including anything custom products

 

If you choose to email us to initiate a return, please ensure to include the following information in your email:

  • Your order number
  • Item(s) that you wish to return
  • Reason for returning

 

Please do NOT send your purchase back to the manufacturer

Please do NOT send back an item without setting up a return first

Depending on your method of payment, transaction fees might not be refundable which ranges between 2.3% - 6% of the order value. Note this is charged by a third-party payment provider, not us. You may receive a full refund if you choose to receive a store credit instead.

There are certain situations where only partial refunds are granted (if applicable)

  • Any item not in its original condition/ is damaged or missing parts for reasons not due to our error
  • Any item that is returned more than 30 days after delivery

 

Some manufacturers would charge a restocking fee ranging from 10% - 30% of the original order value. Below is a list of some but now all of them, please be mindful when placing the order / considering a return:

  • ESR 30%
  • JDMuscle 15%
  • PLM 20%

 

Cancellation

Please ensure you have contacted us on availability before placing an order. All cancellations could be subject to 2.3% - 6% fee to cover transaction costs charged by third-party payment providers. You have 7 days to cancel an order, once the order has been processed(item packaged/ tracking number has been created), the cancellation will not be allowed but you may contact us for a return request if the item is eligible for return.

Special-ordered items cannot be canceled.


Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 3-10 business days(depending on the payment provider). The restocking fee might be applicable as noted in the return section.

Late or missing refunds (if applicable)

Once you have received an email/text from us stating the refund has been processed, at this stage, it's completely out of our control but depends on the payment providers to decide when the refund will show up in your bank. As noted, depending on the payment provider the process can take up to 10 business days(usually 3-5). If you haven’t received a refund yet, please first check your bank statement. A lot of times instead of a new line showing a reversal charge/credit, the payment would just disappear from your pending section.


Contact your credit card company/financing company you used, it may take some time before your refund is officially posted but reaching out might help expedite the process.

If you’ve done all of the above and you still have not received your refund yet, please contact us at sales@JDMuscleUSA.com and one of our team members will provide assistance.

Sale items (if applicable)
Only full-priced items are eligible for return/refund.


Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at sales@JDMuscleUSA.com or use the return/exchange portal located on the top of the page.

Gifts
If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be emailed to you.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.

Shipping
You will be responsible for paying for your own shipping costs for returning your item unless the item was damaged/wrong/defective in which case we will cover shipping both ways. Initial shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item and take no responsibility for any loss or damage during the return shipping.

And please refer to the return shipping address as provided in the RMA / return instructions. A lot of times the return address can be different than the initial shipping address.

Return & Refund

Returns
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately, we can’t offer you a refund or exchange. Please send an email to sales@jdmuscleusa.com or use our return portal located at the top of the page to set up a return.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Additional non-returnable items:

  • Giftcards
  • Special-ordered items, including anything custom products

 

If you choose to email us to initiate a return, please ensure to include the following information in your email:

  • Your order number
  • Item(s) that you wish to return
  • Reason for returning

 

Please do NOT send your purchase back to the manufacturer

Please do NOT send back an item without setting up a return first

Depending on your method of payment, transaction fees might not be refundable which ranges between 2.3% - 6% of the order value. Note this is charged by a third-party payment provider, not us. You may receive a full refund if you choose to receive a store credit instead.

There are certain situations where only partial refunds are granted (if applicable)

  • Any item not in its original condition/ is damaged or missing parts for reasons not due to our error
  • Any item that is returned more than 30 days after delivery

 Some manufacturers would charge a restocking fee ranging from 10% - 30% of the original order value. Below is a list of some but now all of them, please be mindful when placing the order / considering a return:

  • ESR 30%
  • JDMuscle 15%
  • PLM 20%

 

Cancellation

Please ensure you have contacted us on availability before placing an order. All cancellations could be subject to 2.3% - 6% fee to cover transaction costs charged by third-party payment providers. You have 7 days to cancel an order, once the order has been processed(item packaged/ tracking number has been created), the cancellation will not be allowed but you may contact us for a return request if the item is eligible for return.

Special-ordered items cannot be canceled.


Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 3-10 business days(depending on the payment provider). The restocking fee might be applicable as noted in the return section.

Late or missing refunds (if applicable)

Once you have received an email/text from us stating the refund has been processed, at this stage, it's completely out of our control but depends on the payment providers to decide when the refund will show up in your bank. As noted, depending on the payment provider the process can take up to 10 business days(usually 3-5). If you haven’t received a refund yet, please first check your bank statement. A lot of times instead of a new line showing a reversal charge/credit, the payment would just disappear from your pending section.


Contact your credit card company/financing company you used, it may take some time before your refund is officially posted but reaching out might help expedite the process.

If you’ve done all of the above and you still have not received your refund yet, please contact us at sales@JDMuscleUSA.com and one of our team members will provide assistance.

Sale items (if applicable)
Only full-priced items are eligible for return/refund.


Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at sales@JDMuscleUSA.com or use the return/exchange portal located on the top of the page.

Gifts
If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be emailed to you.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.

Shipping
You will be responsible for paying for your own shipping costs for returning your item unless the item was damaged/wrong/defective in which case we will cover shipping both ways. Initial shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item and take no responsibility for any loss or damage during the return shipping.

And please refer to the return shipping address as provided in the RMA / return instructions. A lot of times the return address can be different than the initial shipping address.

PROPOSITION 65 WARNING

Proposition 65 Warnings: cancer and reproductive harm www.p65warnings.ca.gov

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