Skip to content

Twin Power 17-Up M8 Black 4.25 Inch Big Bore Cylinders Pair

Marsoni M251S
Sale price$338.50
Pay 4 payments of $84.62 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Twin Power 17-Up M8 Black 4.25 Inch Big Bore Cylinders PairHigh quality cast Big Bore Cylinders from Twin Power. Factory style black textured powdercoat finish with highlighted fins. Cast in iron liners for strength and durability and finish honed and ready to run. This Part Fits: Year Make Model Submodel 2018 2020 Harley Davidson FLDE Deluxe 107 Base 2018 2021 Harley Davidson FLFBS Fat Boy 114 Base 2018 2021 Harley Davidson FLHC Heritage Classic 107 Base 2018 2021 Harley Davidson FLHCS Heritage Classic 114
Easy Shipping

Quick Dispatch:

Your Twin Power 17-Up M8 Black 4.25 Inch Big Bore Cylinders Pair orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Twin Power 17-Up M8 Black 4.25 Inch Big Bore Cylinders Pair ships.

Need Help?
Questions about Twin Power 17-Up M8 Black 4.25 Inch Big Bore Cylinders Pair, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Twin Power 17-Up M8 Black 4.25 Inch Big Bore Cylinders Pair in your area.

Get Shipping Estimates

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
4.8 ★★★★★
Based on 1803 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
John petre
New York, US
★★★★★ 5
Smash mouth stubby
Phone mount works great. Very nice,easy to position were you want it. Fits tight in a useless cubby .Nice mount good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
P
Verified Purchase
p8o7v
Waukegan, US
★★★★★ 5
Great product.
Perfect fitment, hasn't come loose since installation. Fully adjustable and out of view of prying eyes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
H
Verified Purchase
HW
Dallas, US
★★★★★ 5
Perfect fit attachment!
This product is built very strong and fits perfectly into the small cubby in the lower middle dash of my 2018 4Runner. It holds my iphone tightly but is easy to remove. 100% satisfied with this purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
D
Verified Purchase
D Cooley
Boise, US
★★★★★ 5
Awesome mount!
Works great!! Well built and work’s awesome!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
L
Verified Purchase
Luke Beattie
Battle Creek, US
★★★★★ 5
Great easy to install mount
Great mount! Shakes a little on the highway but that’s expected. Works perfect for my iPhone 17 Pro Max and the mictuning switch panel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 1, 2025

recommand products