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Description
STI SPORT MUFFLER B4 For LEGACY B4 (BL) ST4430021001Brand STI Product SPORT MUFFLER B4 Product Number ST4430021001 Description This product provides dual left and right tail ends, without changing the muffling format of the standard multi stage expanding muffler. It is tuned to emphasize the dry sound of boxer engines. The outer shell of the main muffler is made from stainless steel. The STI logo is stamped on the top of the tail pipes. Compatible Vehicle LEGACY B4 (BL) Compatible Models Model
| Brand | STI |
| Product | SPORT MUFFLER B4 |
| Product Number | ST4430021001 |
| Description | This product provides dual left and right tail ends, without changing the muffling format of the standard multi-stage expanding muffler. It is tuned to emphasize the dry sound of boxer engines. The outer shell of the main muffler is made from stainless steel. The STI logo is stamped on the top of the tail pipes. |
| Compatible Vehicle | LEGACY B4 (BL) |
| Compatible Models |
Model adaptation symbol: A 2003-year May-2004 04 May 2.0i (AWD / 4AT) - 2.0i (AWD / 4AT) - 2.0R (AWD / 5MT) - 2.0R (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GTspec.B (AWD / 5MT) ___ 2.0GTspec.B (AWD / 5AT) ___ 3.0R (AWD / 5AT) - 3.0R (AWD / 5AT) - model adaptation symbol : B 2004 year 05 January to May 2005 2.0i (AWD / 4AT) - 2.0i (AWD / 4AT) - 2.0R (AWD / 5MT) - 2.0R (AWD / 5MT) - 2.0R (AWD / 4AT) - 2.0 R (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GT (AWD / 5AT) ___ 2.0GTspec.B (AWD / 5MT) ___ 2.0 GTspec.B (AWD / 5AT) ___ 3.0R (AWD / 5AT) - 3.0R (AWD / 5AT) - 3.0Rspec.B (AWD / 6MT) - model adaptation symbol: C 2005 Jun-2006 May 2.0i (AWD / 5MT) - 2.0i (AWD / 4AT) - 2.0i (AWD / 4AT) - 2.0R (AWD / 5MT) - 2.0R (AWD / 4AT) - 2.0R (AWD / 4AT) - 2.0R (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GTspec.B (AWD / 5MT) ___ 2.0GTspec.B (AWD / 5AT) ___ BLITZEN 2006 (AWD / 5MT) - BLITZEN 2006 (AWD / 5AT) - 3.0R (AWD / 5AT) - 3.0R (AWD / 5AT) - 3.0 Rspec.B (AWD / 6MT) - 3.0Rspec.B (AWD / 5AT) - model adaptation symbol: D 04 May 2006 06 May and 2007 2.0i (AWD / 5MT) - 2.0i (AWD / 4AT) - 2.0R ( AWD / 5MT) - 2.0R (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GTspec.B (AWD / 6MT) ___ 2.0GTspec.B (AWD / 5AT) ___ 3.0 R (AWD / 5AT) - 3.0Rspec.B (AWD / 6MT) - 3.0Rspec.B (AWD / 5AT) - model adaptation symbol: E 05 May 2007 - 2008 04 May 2.0i (AWD / 5MT) - 2.0i B -SPORT (AWD / 5MT) - 2.0i (AWD / 4AT) - 2.0i B-SPORT (AWD / 4AT) - 2.0i Brighton (AWD / 4AT) - 2.5i (AWD / 4AT) - 2.0Rspec.B (AWD / 5MT) - 2.0Rspec.B (AWD / 4AT) -. 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GT SI-CRUISE (AWD / 5AT) ___ 2.0GTspec B (AWD / 6MT) ___ 2.0GTspec.B (AWD / 5AT) ___ 3.0R (AWD / 5AT) - 3.0R SI-CRUISE (AWD / 5AT) - model adaptation symbol: F 2008 year May-2009 2.0i (AWD / 5MT) - 2.0i (AWD / 4AT) - 2.5i (AWD / 4AT ) - 2.5i SI-CRUISE (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GT ES (AWD / 5AT) ___ 2.0GTspec.B (AWD / 6MT) ___ 2.0GTspec .B (AWD / 5AT) ___ 3.0R ES (AWD / 5AT) - S402 (AWD / 6MT) -
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| Remarks | * Since there is no clearance with the tail pipe, this product can not be installed together with Subaru genuine rear bumper skirt and exhaust finisher. * Vibrations and noise are transmitted more easily to the interior of the car due to the hard bushings. * For B4 turbo (2.0GT, 2.0GT Spec.B, 2.0GT SI CRUISE, 2.0GT EyeSight) * The explanation of this product is for Japanese specification. |
| Notes | Images are for illustration purpose only. Actual product may vary. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 2175 reviews
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Product Reviews
★★★★★ 4
Not for aggressive dogs but no stuffing is super!
Size: 5 Pack
I've bought these several times but have the attitude that toys are disposable. One of my hounds will drop right through then to pull out the squeaker before losing interest. My other hound wants to love them. Glad there is no stuffing to get all over the house but they will tear quickly.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
worth the price !
Size: 5 Pack, Size: 5 Pack
Best toys for our livestock puppies since they have been getting into our outdoor things which isn’t their faults but i figure I would get these small squeaky animals toys and they are obsessed and love playing tug a war with them! They’re super soft, the quality is amazing cause these puppies are tough chew monsters, love the squeaky sound it makes and the patting are suitable as well! Definitely recommend this especially for the price and how fast shipping was !
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Solid dog toys HOWEVER...
Size: 5 Pack
Got these toys for our collie-retriever. He loves them and plays with them a lot and will even get them out in the middle of the night to play with them. Since there's no stuffing you can't throw them very far but they are good for tug-of-war and really soft. The one downside, while they techically are durable and hold up to rigorous chewing, they are not impervious as our little man finally disembowled Mr. Lion after a few months of playing with him. (Serated the lining with his teeth.) Still highly recommend.
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Reviewed in the United States on April 17, 2026
★★★★★ 3
Not very durable
Size: 5 Pack
They’re a great toy for the dog. However, if the dog is bigger, they are very easily destroyed.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Hold up to a heeler!
Size: 5 Pack
I have a red heeler who destroys chew toys in quickly. I was extremely happy with these ones. They are made of thicker material and even after he chews the squeaky piece out, I can play tug of war with them without them ripping apart. The price for the quality is the best I have found in a long time.
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Reviewed in the United States on June 9, 2026