ACT XACT Streetlite Flywheel act600870 for 2016–2018 Mazda MX-5 Miata

600870 is a Streetlite flywheel, which is considerably lighter than stock and is the most durable flywheel offering from ACT. Materials are properly distributed for maximum strength, lower inertia, good heat tolerance and rigidity. ACT's Streetlite flywheels are preferred for street or drag racing. ACT flywheels are serviceable and can be resurfaced with no need to purchase additional parts. XACT Flywheel Streetlite Noticeably improved engine response and acceleration, OE to mild gear rattle; Heat-treated forging for strength and toughness, induction-hardened ring gears for maximum life; One piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears; Recommended for street and race use; Forged, CNC machined and dynamically computer balanced for smooth high RPM reliability

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT XACT Streetlite Flywheel, part number act600870, is engineered for drivers seeking sharper engine response, quicker acceleration, and dependable clutch performance in street and drag racing applications. Its lighter-than-stock design reduces rotational inertia while maintaining the strength, rigidity, and heat tolerance required for demanding use. This flywheel is designed for select 2016–2018 Mazda MX-5 Miata applications and provides a performance-focused upgrade over the original equipment unit.

ACT manufactures the Streetlite flywheel from a heat-treated forging and precision CNC machines it for consistent fit and balance. The one-piece construction promotes efficient heat transfer from the clutch disc while eliminating common failure points associated with warped inserts and loose ring gears. An induction-hardened ring gear is designed for extended service life, while dynamic computer balancing supports smooth operation at elevated engine speeds. The result is improved throttle response with OE to mild gear rattle characteristics appropriate for street-oriented performance builds.

• Feature: Lightweight Streetlite design reduces rotating mass for improved engine response and acceleration.
• Feature: Heat-treated forged construction provides strength, toughness, and dependable durability.
• Feature: One-piece construction promotes uniform heat transfer and reduces potential failure points.
• Feature: Dynamically computer balanced for smooth, reliable operation at high engine speeds.

Key Product Specifications & Technical Data:

• Brand: ACT
• Part Number: act600870
• Product Line: XACT Streetlite
• Product Type: Performance automotive flywheel
• Construction: One-piece heat-treated forged design
• Ring Gear: Induction-hardened for extended service life
• Balancing: Dynamically computer balanced
• Application: Street and drag racing use

What's Included: One ACT XACT Streetlite flywheel. The flywheel is serviceable and may be resurfaced when appropriate, helping reduce the need for replacement parts during future clutch service. A one-year manufacturer warranty supports the product's performance and durability.

Fitment: Fits select 2016–2018 Mazda MX-5 Miata applications. Confirm the vehicle's engine, transmission, and model configuration before ordering. This product carries a California Proposition 65 warning.

Features:

• Lightweight Streetlite design reduces rotating mass for improved engine response and acceleration.
• Heat-treated forged construction provides strength, toughness, and dependable durability.
• One-piece construction promotes uniform heat transfer and reduces potential failure points.
• Dynamically computer balanced for smooth, reliable operation at high engine speeds.

Fitments:
2016 Mazda MX-5 Miata Club
2016 Mazda MX-5 Miata Grand Touring
2016 Mazda MX-5 Miata Sport
2017 Mazda MX-5 Miata Club
2017 Mazda MX-5 Miata Grand Touring
2017 Mazda MX-5 Miata RF Club
2017 Mazda MX-5 Miata RF Grand Touring
2017 Mazda MX-5 Miata Sport
2018 Mazda MX-5 Miata Club
2018 Mazda MX-5 Miata Grand Touring
2018 Mazda MX-5 Miata RF Club
2018 Mazda MX-5 Miata RF Grand Touring
2018 Mazda MX-5 Miata Sport

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1