Indian Motorcycle Thunderstroke 116 Stage 2 Performance Kit

This Thunderstroke Performance Kit delivers up to 17% more horsepower* than a stock Thunderstroke 116 ci engine. Enjoy responsive, punchy acceleration from a stop and plenty of no-lag passing power at highway speeds. With this kit, you’ll never compromise reliability or ride quality. Plus, Indian Motorcycle stands behind every accessory with warranty protection and the guarantee that you'll never void your motorcycle’s warranty when you install a factory-backed stage kit. This Stage 2 Kit must be installed in-conjunction with a Stage 1 Air Intake and Stage 1 Slip-On Exhaust Kit (each required and sold separately). This kit includes a card with a unique calibration code that upgrades your Engine Control Module (ECM) software from a standard set-up. This software upgrade is required to ensure peak performance; therefore, dealer installation is required. *Increase results may vary depending on specific testing conditions. This accessory is not compliant on any Chief model for use in California.

Important Regulatory Information

This item is only available for purchase and installation at your dealer. Contact RiderMarket Orlando for installation assistance.

Overview

Increase Horsepower: Unleash up to 17% more horsepower* than a stock Thunderstroke 116 engine.

Enhance Performance: Enjoy responsive, punchy acceleration from a stop and plenty of no-lag passing power at highway speeds.

Requires Stage 1: Install in-conjunction with a Stage 1 Air Intake and Stage 1 Slip-On Exhaust Kit (each required and sold separately).

Requires Dealer Installation: Upgrades internal engine components and requires a software upgrade that ensures peak performance.

What's Included: 2 fuel injectors, 1 throttle body assembly, one set (three pieces) of high-performance camshafts, all necessary hardware, calibration, and installation instructions.

Specifications

What is included

Includes 2 fuel injectors, 1 throttle body assembly, one set (three pieces) of high-performance camshafts, all necessary hardware, calibration, and installation instructions.

Manufacturer-listed fitment

• 2026, 2024 Roadmaster with PowerBand Audio Package
• 2026 Roadmaster 125th Anniversary Edition
• 2026 Chief Bobber
• 2025-2026 Sport Chief RT
• 2025 Super Chief Dark Horse
• 2025 Indian Springfield Special Edition
• 2024, 2020 Roadmaster Elite
• 2024-2026 Roadmaster Limited with PowerBand Audio Package
• 2024-2026 Roadmaster Dark Horse with PowerBand Audio Package
• 2024-2026 Chieftain Limited with PowerBand Audio Package
• 2024-2026 Chieftain Dark Horse with PowerBand Audio Package
• 2024-2025, 2020 Chieftain
• 2023, 2020-2021 Chieftain Elite
• 2023-2026 Sport Chief
• 2023 Super Chief Limited Icon
• 2022-2026 Chief Bobber Dark Horse
• 2022-2025 Chief Dark Horse
• 2022-2024 Super Chief Limited
• 2022-2023 Chieftain Dark Horse Icon
• 2021-2026 Roadmaster Limited
• 2021-2026 Indian Springfield Dark Horse
• 2021-2026 Indian Springfield
• 2020-2026 Roadmaster Dark Horse
• 2020-2026 Roadmaster
• 2020-2026 Chieftain Limited
• 2020-2026 Chieftain Dark Horse
• 2020 Springfield Dark Horse
• 2016-2017 Springfield

Match the exact model, year, trim, and required installation components before ordering.

Manufacturer notices

• Important regulatory information
• California Proposition 65 warning