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SP Concepts Big Bore 4.5 for Harley Davidson
SP Concepts Big Bore 4.5 for Harley Davidson
SP Concepts Big Bore 4.5 for Harley Davidson
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SP Concepts Big Bore 4.5 for Harley Davidson

Marsoni M251S
Sale price$575.00
Pay 4 payments of $143.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
SP Concepts Big Bore 4.5 for Harley Davidson4. 5 HIGH FLOW PERFORMANCE ROLLED CONE MUFFLER WITH STEPPED BAFFLE FROM 2 TO 2 INCHES. INCREASES BOTTOM TO MID RANGE TORQUE AND HORSEPOWER ON ALL MOTORS. TUNED PROPERLY CAN ACCOMMODATE 88" TO 143". 065 STAINLESS STEEL HEADERS, STEPPED FROM 1 TO 1 7 8 TO 2 AT THE COLLECTOR HAND TIG WELDED FROM TOP TO BOTTOM MACHINED STAINLESS STEEL HEADER COLLARS 18MM O2 BUNGS WITH 12MM ADAPTERS, ALLOWS FOR STOCK OR AUTOTUNE SENSORS COMPLETE HARDWARE KIT WITH
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  • Express: 1-2 business days

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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
4.2 ★★★★★
Based on 981 reviews
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Product Reviews
D
Verified Purchase
Dac32north
Natrona Heights, US
★★★★★ 5
Save on filters forever
Color: CA9683
A perfect replacement for my auto' expensive paper filter. With a little care it will outlast the car
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 18, 2025
A
Verified Purchase
Alex Galicia
Grantham, US
★★★★★ 5
Quality
Color: CA9683
Definitely a improvement from Oem, have it on both Fj and Tacoma, feels so much better driving
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2025
D
Verified Purchase
DAVID C. PALMER
Grantham, US
★★★★★ 5
It works
Color: CA9683
No complaints
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2025
P
Verified Purchase
PK
Port Orchard, US
★★★★★ 4
It filters air.
Color: CA9683
This apparently fits in a car to filter air to the car. I put it in mine. But I cannot see it. So IDK if is even still there?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2023
J
Verified Purchase
Jim Condo
Port Orchard, US
★★★★★ 5
Great purchase
Size: Accord 2018-22 1.5L Gas
Fit my 2018 Honda Accord as stated. Easy to install. Saved $50 doing it myself.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026

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