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USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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For Your Every Summer RSVP, with Code: SUMMER15
Description
BMW F8X M3 M4 S55 J PIPE30 Day Money Back Guarantee IN STOCK HIGHLIGHTS FULL T6061 ALUMINUM CONSTRUCTION SECURED THROTTLE BODY CONNECTION 2X METHANOL NITROUS PORTS DIRECT FIT PROFILE Complete your S55 upgraded charge piping with the ARM S55 J Pipe! This J Pipe is the final piece of piping on the S55 before the charge air enters the intake manifold. BMW constructed the OEM J Pipe of plastic which is prone to cracking an detaching from the throttle body under boost. The ARM
- 30 Day Money-Back Guarantee | IN STOCK
HIGHLIGHTS
• FULL T6061 ALUMINUM CONSTRUCTION
• SECURED THROTTLE BODY CONNECTION
• SECURED THROTTLE BODY CONNECTION
• 2X METHANOL/NITROUS PORTS
• DIRECT FIT
• DIRECT FIT
PROFILE
Complete your S55 upgraded charge piping with the ARM S55 J Pipe! This J Pipe is the final piece of piping on the S55 before the charge air enters the intake manifold. BMW constructed the OEM J Pipe of plastic which is prone to cracking an detaching from the throttle body under boost. The ARM S55 J Pipe is constructed of T6061 aluminum for a durable replacement that will hold up to even the most demanding builds.
The ARM S55 J Pipe is designed to lock onto the stock throttle body using a CNC machined connector. This connector incorporates a locking C-clip design which replaces BMW's one-time use plastic strip to create a secure connection to the throttle body.
Included with the ARM S55 J Pipe are two pre-plugged 1/8 NPT fittings which allows for post-intercooler methanol or nitrous injection. This is the preferred location of injection for many S55 tuners. J-Pipes with only one methanol port are not able to supply a sufficient amount of methanol for advancing the timing enough to make any substantial power increases.
For reinstalling your S55 vacuum line, the ARM J Pipe has a precisely machined vacuum line connection port to prevent any leaks, a common issue on many other S55 J Pipes.
IN THE BOX
• ARM S55 J-Pipe• Intercooler To J-Pipe Silicone Hose
• Throttle Body Retaining C-Clip
• Clamps
FITMENT GUIDE
| Make | Chassis | Model | Engine |
| BMW | F80 |
M3 |
S55 3.0L |
| BMW | F82 | M4 |
S55 3.0L |
| BMW | F83 |
M4 |
S55 3.0L |
| BMW | F87 |
M2C |
S55 3.0L |
ARM MOTORSPORTS LIFETIME WARRANTY
Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.
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
4.6 ★★★★★
Based on 1385 reviews
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Product Reviews
★★★★★ 5
My go-to shorts this summer
Size: 30, Color: Athens Mid Short - Medum Indigo
These are easily my favorite shorts this summer. The fit is super flattering and they have that classic Levi’s look that never goes out of style.
The denim feels high quality and holds its shape without stretching out too much during the day. They’re comfortable once you break them in, and they pair well with pretty much anything.
I also like that they’re not too short or too long—just the right length for everyday wear. Definitely worth it if you’re looking for a staple pair of denim shorts!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
Favorite Summer Shorts worn on repeat
Size: 31, Color: Luxor Heat - Light Indigo
These are my favorite shorts for summer. I have several pairs that I wear on repeat because they’re comfortable, flattering, and hold up really well.
I ordered a size up from what I already have since I’m postpartum, but I ended up not needing it—my original size still fits me best. So I did return these, but only because of sizing, not the product itself. I do suggest sizing up 1 size from your normal size. I usually wear a 29 and have these in a size 30 and they fit great. They are a true jean material and not strechy.
Highly recommend these if you’re looking for a reliable, go-to pair of denim shorts.
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Reviewed in the United States on June 11, 2026
★★★★★ 5
Cute & Comfy
Size: 28, Color: Athens Mid Short - Medum Indigo
The only pair of shorts that actually fits really well! Coverage is perfect.
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Reviewed in the United States on May 18, 2026
★★★★★ 4
Cute - SIZE UP
Size: 33, Color: Luxor Heat - Light Indigo
these are super cute and look very flattering but they run SMALL. I used to wear 32s in Levi’s but lost 30 pounds this year so I ordered a size down and they didn’t fit at ALL. I reordered a size 33 and they still fit tighter. My Levi jeans in a 32 barely stay on me anymore but these are snug in a 33. They’re still super cute and comfy, guess it gives me room to size down into them for awhile lol
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Reviewed in the United States on June 8, 2026
★★★★★ 5
I love these!
Size: 30, Color: Athens Mid Short - Medum Indigo
Wow! I got these for$20! They fit just like the 501 pants to me.
. The only thing I'd change is s little less fraying on the front but other than that these are a broken in lived in look for $20!
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Reviewed in the United States on May 3, 2026
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