S&S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S&S. Few names carry more weight with engine builders in this space.
The S&S Cycle Hooligan big-bore kit is designed to increase your 1200cc Harley-Davidson Sportster engine to 1250cc. This kit offers a straightforward bolt-on installation, requiring no machining or rebalancing. It includes pistons, a 482 cam, and Precision Tappets, all designed to work with your stock heads, pushrods, and fuel system.
If you're looking to uncork serious power from your 1200cc Harley-Davidson Sportster, the S&S Cycle Hooligan big-bore kit is your answer. This comprehensive kit bumps your displacement to 1250cc, delivering a significant performance boost that you'll feel every time you twist the throttle. What truly sets the Hooligan kit apart is its bolt-on design; you won't need to send your cases off for machining or worry about rebalancing your bottom end. It's engineered for riders who want more power with a manageable installation process.
The S&S Cycle Hooligan kit is more than just a piston upgrade; it's a complete power package designed to transform your Sportster's riding experience. By combining increased displacement with a performance cam and precision tappets, it significantly enhances torque and horsepower potential. While the kit works with stock components, pairing it with a high-flow intake and a performance exhaust will further amplify your gains. This kit is a proven path to turning your Sportster into a true street hooligan.
Will this S&S Hooligan kit fit my Harley-Davidson XR1200 Sportster?
No, this S&S Cycle Hooligan big-bore kit is not compatible with XR1200 models. It is designed for standard Sportster 1200 models from 2000-2021 only.
Do I need to perform any machine work on my engine to install this kit?
No, the S&S Cycle Hooligan kit is designed for a completely bolt-on installation. No machining or rebalancing of your engine components is required.
Do I need to upgrade my fuel system or heads when installing this kit?
No, this kit is engineered to be compatible with your stock heads, pushrods, and existing fuel system. While a performance intake and exhaust are recommended for maximum gains, they are not strictly required.
| BRAND | S&S Cycle |
| TYPE | Piston Sets - Powersports |
| SKU | T14-664086 |
| WEIGHT | 29.0 lb |
So happy I installed this kit - it completely changed my bike in both sound and performance. Once the engine is out of the frame the install is a piece of cake, but there is a significant amount of work needed to get there. There is no room to install this on a sporty with engine in frame, so be prepared to pull it out.
Hello everyone I have a 2015 iron 883 that I did the upgrade on. The instructions werent good honestly but there is a video on YouTube that is 4 parts and walks you through everything I followed it and had no problems. The upgrade really wasnt very hard and with the videos I would do it again if I had too. In Az I was quoted about 1k just for the install. One thing Ill add the kit doesnt come with a cam cover gasket which you might want to get and it also doesnt come with any rocker box gaskets, those parts all come off so you might wanna think about replacing them as well I did. But so far its a very big difference in power I love it dont regret it one bit!
This kit is awesome, it completely transformed my bike. With a two brothers 2 into 1, and performance Machine air intake and a dynojet power vision we achieved 83 hp., highly recommended and very easy instalation.
Really went back and forth about this and the hammer. I choose this and i stand by it but still wonder what the hammer kit would have brought to the table. Over all iv had this S&S for a month and love it. Big gains.
100% satisfied with this purchase. Installed along with a BDL High Performance Extra Clutch Kit. Definitely a throatier sound through my Bassani 2-1 exhaust and you can feel the power. It just wants to go!<br /><br />I was also between this and Hammer. After considering what I was getting for the money, and what my goals were, I decided on this kit.<br /><br />Installation was (as Lemy would say) a 2 bearder for me. There are some special tools you?ll need, but overall, was pretty easy. I took my time and completed in about 30 hours over 5 days.
Installed but tuner won’t flash but tried cranking it and I could hear the potential!
