Harley-Davidson Sportster (883, 1200) Big Bore KitS&S Cycle has released a 1250cc Big Bore kit for 1986-2014 Harley-Davidson Sportsters, which can be bolted into the stock crankcases.The kit includes 3-9/16” bore pistons, cylinders, and gaskets, and with other S&S components doubled the horespower of an 883cc engine.
Needless to say the new 1250cc conversion kit will appeal to the rider who wants to get the most from his or her bike, so S&S also recommends the S&S 600 cams and S&S CNC ported heads to complete the package. Make the most of that displacement.Choose from silver or wrinkle black powder coat finish that matches the stock finish on late model engines. Also, these kits are available with flat topped or 5.5cc pop-up forged pistons for a choice of compression ratios. Flat topped pistons yield 10.3:1 with stock 1200cc heads or S&S CNC ported heads. The pop-up pistons deliver 11.2:1.If you’re looking for the largest bolt-on Big Bore kit available for the Harley-Davidson Sportster, this is it. The S&S 1250cc kit delivers great performance at an affordable price. S&S 1250cc Big Bore Kit installed on an 883cc Sportster – Dyno ChartDyno Chart with S&S 1250cc Big Bore Kit on 883cc SportsterThe Dynojet 250i chassis dynamometer shows the potency of the S&S 1250cc kit installed on a Sportster. The chart to the left (click to expand) compares a stock 2009 883cc engine before and after the 1250cc kit was installed. The 883cc engine produced over twice the horsepower!In addition to the 1250cc kit with 5.5cc pop-up dome forged pistons, the test bike was equipped S&S slip-on mufflers, stock EFI throttle body with an S&S tuned induction system, S&S 600 cams, and stock cylinder heads CNC ported by S&S.Note – Not recommended for engines with stock 883 heads, but works great with stock 1200 heads and 883 or 1200 heads CNC ported by S&S.
S&S® 1250cc Big Bore Kits for 1986-2014 Harley-Davidson® Sportster® Models
Finish
Piston
CR*
Part #
MSRP
Wrinkle Black Powder Coat
Flat Topped
10.3:1
910-0443
$989.95
Wrinkle Black Powder Coat
5.5cc Pop-up
11.2:1
910-0446
$999.95
Silver Powder Coat
Flat Topped
10.3:1
910-0433
$989.95
Silver Powder Coat
5.5cc Pop-up
11.2:1
910-0436
$999.95
*Compression ratio based on stock or S&S CNC ported heads with 60cc combustion chamber
Ducati Scrambler Icon Dark + Chip Doherty with Neale Bayly
byMotos and Friends by Ultimate Motorcycle
The Motos & Friends Podcast is brought to you by the Yamaha YZF-R7. The R7 is a brilliant supersport machine that is also comfortable. Now there’s an idea! Check it out at YamahaMotorsports.com, or you can see it for yourself at your local Yamaha dealer.
This Podcast is also brought to you by the new Schuberth C5 modular helmet. The flip-up C5 is light and it blends safety with amazing quietness. Visit Schuberth.com for more information.
This week, in the first segment Senior Editor Nic de Sena talks to us about the new Ducati Scrambler Icon Dark. This somewhat entry-level machine still comes with all the great Ducati hallmarks of excellent low down torque and impeccable handling. If you like to hear about fun motorcycles, then you’ll enjoy this one.
In the second segment, Editor-at-Large Neale Bayly brings us another of his interviews, this time it’s with Chip Doherty.
Chip’s amazing resume includes motorcycle racer, restorer and collector. Back in the early 2000s he used his engineering background to start motorcycle clothing manufacturer Motophoria.
After selling that company in 2007, Chip’s resume gained him entry to NASA where for 7 years he was responsible for launching the space shuttle! Since moving on from NASA, Chip expanded his collection of classic British bikes. Eventually Neale persuaded him to ride to Peru and help Neale’s Wellspring Foundation raise money for the orphanage there.
So, from all of us here at Ultimate Motorcycling, we hope you enjoy this episode!
Neale Bayly’s Wellspring Foundation always appreciates donations. Just $5 will help feed an orphan.
Harley-Davidson Sportster (883, 1200) Big Bore KitS&S Cycle has released a 1250cc Big Bore kit for 1986-2014 Harley-Davidson Sportsters, which can be bolted into the stock crankcases.The kit includes 3-9/16” bore pistons, cylinders, and gaskets, and with other S&S components doubled the horespower of an 883cc engine.
