TAB Performance Redline Performance Kit for Harley Davidson 121 Milwaukee 8 Models (Non VVT)
Fitment Any non VVT factory 121 Harley-Davidson model.
Stage 2 Redline Performance Kit for Harley-Davidson
Unleash the full potential of your Harley-Davidson with the Redline Performance Kit—a complete, high-performance upgrade engineered for riders who demand uncompromising power, precision, and sound.
This kit detailed below is a bolt on kit, but does require some specialty tools and a high level of technical ability. This is not a kit that we can provide installation support through email or customer phone support. If you do not have the technical expertise to do an install of this nature you will need to bring the kit to a local trained professional who can complete the installation for you.
Kit Includes:
- Redline Cam – Designed for aggressive torque and horsepower gains across the RPM range, delivering explosive acceleration and smooth cruising.
- High-Performance Lifters – Built to withstand extreme conditions, ensuring durability and consistent valve operation. Each Precision Tappet is hand assembled to exacting tolerances and designed for quiet operation and rapid pump up and all are made in the USA.
- S&S Tappet Cuffs - Factory tappet guides are constructed of plastic and are at risk for allowing the tappets to twist under heavy stress. S&S Tappet Cuffs capture the tappets without impacting vertical motion and keeping them perfectly aligned, even in high stress, high RPM situations.
- S&S Adjustable Pushrods –Super strong chromoly steel reduces pushrod flex. Pushrods come with Chrome or Black pushrod covers, O-rings and Cover keepers.
- High-Flow Injectors – Maximize fuel delivery for enhanced combustion and throttle response.
- Impact Wiring Solutions Tuner – Custom-mapped for this kit, giving you full performance without the added cost of a dyno tune. This unit will ship separately from the rest of the kit.
- Calibration – As stated above, once we receive your detailed vehicle information we will load the fully calibrated map on the IWS and have it shipped out to you ready to go. If you have any questions or issues regarding the tune, please reach out to IWS for tech support. You will need to have professionally installed the kit and not added components or made modifications to the kit for them to be able to provide remote tuning support.
- Cometic Gasket Set – All necessary gaskets included for a leak-free, professional-grade installation.
- Redline Exhaust System (2-1 or 2-2) – Choose your style: a thunderous 2-1 for peak performance or a classic 2-2 for balanced flow and iconic Harley sound. Both systems are crafted from high quality chrome plated steel and tuned for maximum power and aggressive tone.
Why Choose Redline?
Have you ever asked any of the following questions? What is the best cam, which exhaust is the best performing, do I need to have a custom tune? If you have this is the kit for you. We have done the research, completed the testing, and built the calibrations. We take all of the guesswork out of the equation and give you a complete system that performs great across the board. There is no answer to which part is the best, it’s all in how they work together to create a machine that is reliable and runs with the best. With this kit you can rest assured you end up with a great build that is bolt on and go.
Do I need to tune with this kit?
That is the beauty of our kits, when you select the IWS tuner option, it will come with a preloaded map for your 121 motor (other calibrations are in the works) so there is no need to pay for expensive calibrations, we’ve done the work for you and it comes with your new kit. We will need you to send us your VIN number and Year, Make, and Model so we can preload the maps for your new bolt on kit. If you choose to purchase the cam kit only, then you will be responsible for the tuning required to make sure everything runs smooth.
Additional information needed?
When purchasing this kit, we will need some additional information about your bike to make sure the tuner is setup properly for your ride. Please follow the link below to submit your vehicle information.
Vehicle Info
This product is not covered under the typical TAB Performance lifetime warranty. If the product arrives damaged, TAB will stand behind our products but you as the engine builder and assuming liability for the modifications made to your motorcycle and these modifications will likely void your manufacturer's warranty.
Bolt it on. Fire it up. Feel the difference.
DISCLAIMER: Not legal for sale or use in California on any pollution controlled motor vehicles.
