Tab Performance Redline Stage 2 Kit for 121 Milwaukee-Eight

TAB Performance Redline Kit — Stage 2

Milwaukee-Eight (Non-VVT Factory 121 Models)

📦 Free Shipping • 🇺🇸 Authorized TAB Performance Dealer
🔧 Professional / Advanced Installation Required

⚠ California Notice:
This kit does not conform to C.A.R.B. emissions standards and cannot ship to California. California orders must be cancelled and refunded.

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This Is the “No Compromise” 121 Build

The Stage-2 Redline Kit is for riders who want their factory 121 to feel like a purpose-built performance motor — not a warmed-over stock bike.

Every component in this kit is designed to work as one system: airflow, fuel delivery, valve timing, and exhaust are matched so the bike delivers:

• explosive roll-on torque
• harder acceleration through the mid-range
• clean, controlled top-end pull
• the deep, authoritative TAB sound

No guessing. No mismatched parts. Just a complete performance recipe for the Milwaukee-Eight 121.

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What’s in the Kit (and Why It Matters)

TAB Redline Cam

• Aggressive torque and horsepower across the RPM range
• Built for real street riding, not just dyno peaks

High-Performance Lifters

• Hand-assembled tappets for quiet operation
• Designed to live under high load & RPM

S&S Tappet Cuffs

• Maintain alignment under stress
• Prevent lifter twist at high RPM

S&S Adjustable Pushrods

• Chromoly strength with Chrome or Black covers
• Reduced flex for stable valve train control

High-Flow Injectors

• Proper fuel delivery for the added airflow
• Crisp throttle response

IWS (Impact Wiring Solutions) Tuner

• Preloaded maps specific to this kit
• Full performance without a dyno session when vehicle info is provided

Cometic Gasket Set

• Professional, leak-free installation

TAB Redline Exhaust (Your Choice)

• 2-1: peak performance & aggressive character
• 2-2: balanced flow with classic Harley tone

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Fitment — Read This Carefully

✔ Factory 121ci Milwaukee-Eight — Non-VVT only
✔ Late-model Harley Touring platforms
✘ Not for VVT 121 engines (2023+ CVO Street Glide/Road Glide). TAB also lists this kit for non-VVT factory 117s, including 2024+ Street Glide/Road Glide, but this listing is the 121 version and its preloaded IWS tune is stated for the 121 only. Riding a 117? Confirm with us before ordering.

If you’re not 100% certain about your engine configuration, tap Ask a Rider before ordering.

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Installation Reality

• Advanced installation required

• Specialty tools & mechanical experience needed

• ECU calibration handled via included IWS tuner

• No step-by-step install support provided

Liability Notice:
Modifications are assumed by the installer. This kit is not covered under the standard TAB lifetime warranty.

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What You’ll Feel on the Ride

• Immediate, violent roll-on torque
• Stronger pull in every gear
• Faster, cleaner throttle response
• A 121 that finally acts like a big-inch motor

This is the upgrade for riders who want a true performance bagger, not just a louder one.

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Shipping & Confidence

📦 Free Shipping • Ships from the USA
🇺🇸 Authorized TAB Performance Dealer — No Knockoffs
🔄 30-Day Returns
❌ Cannot ship to California (non-CARB compliant)

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Why Buy From Dreaded Iron Moto

• Harley-only performance focus
• We help you confirm fitment before you spend real money
• Built for riders who actually put down miles
• Authorized, traceable parts — never gray market

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Bolt It On. Wake It Up.

Give your Milwaukee-Eight 121 the complete system it deserves.

🛒 Add to Cart — Build it once, build it right.

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🔧 TAB Performance — Stage 2 Questions

Do I need a tune with this kit?

No dyno session is required when using the included IWS tuner. Maps are preloaded specifically for this kit once you submit vehicle details. The tune is part of the system — not an afterthought.

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Is this kit street-friendly or race-only?

It’s built for real baggers. You’ll get aggressive acceleration and power, but with manners you can live with on long rides. This isn’t a fragile drag setup.

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2-1 or 2-2 — how should I choose?

• 2-1: maximum torque and performance-bagger feel

• 2-2: balanced power, classic dual look, smoother touring character

Tell us how you ride and we’ll guide the choice.

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Is installation really bolt-on?

The parts are bolt-on, but the job requires advanced mechanical skill and specialty tools. This is not a first-time garage project.

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Will this work with my future upgrades?

Yes — the kit is designed as a foundation for:

• intake upgrades
• clutch improvements
• additional motor work
• professional dyno refinement

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What will I notice on the first ride?

• harder hit when you roll on
• less downshifting to pass
• stronger pull through the mid-range
• deeper, more authoritative exhaust tone

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Still not sure this fits your build?

Tap Ask a Rider and tell us:

• exact bike & year
• solo or two-up
• exhaust preference
• riding style (touring vs performance)

We’ll help you choose the setup you’ll love 10,000 miles from now — not just on day one.