ZM12-HDSS - HD/Perf Street Sprung ZM12-HDSS - HD/Perf Street Sprung

$695.00
$542.00

GUARANTEED
TO FIT YOUR CAR

SHIPS OUT
SAME DAY

100% CUSTOMER
SATISFACTION

GUARANTEED
TO FIT YOUR CAR

SHIPS OUT
SAME DAY

100% CUSTOMER
SATISFACTION

Availability: Many In Stock
Sku: ZM12-HDSS
ACT

Product Description: HD/Perf Street Sprung Clutch Kit

The HD/Perf Street Sprung Clutch Kit, identified as ZM12-HDSS, represents a blend of performance and streetability engineered by ACT. Weighing 26.8 pounds, this kit offers a torque capacity of 312 ft/lbs, exceeding OE standards by 46%. Featuring an organic disc material with a clutch disc diameter of 8.8 inches (224mm) and an input shaft diameter of 0.9375 inches, it is designed to deliver reliable performance on both the street and the track.

At its core lies ACT's popular Heavy Duty pressure plate, renowned for its exclusive diaphragm design, which increases clamp load, reduces deflection, and maximizes clutch life. Each diaphragm undergoes a meticulous four-stage heat-treating process, ensuring unparalleled performance. Precision cover stampings provide rigidity and consistency, essential for enduring performance under demanding conditions.

The kit incorporates ACT's Performance Street discs, featuring premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, ensuring increased strength and reliability.

Key Features:

  • Feel: Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle.
  • Life: Longer friction life, extended by ACT's exclusive diaphragm design.
  • Quality: Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade.
  • Recommended Use: Suitable for both street and race use, offering a balance of performance and drivability.
  • ACT Difference: Rigorously tested, ensuring 100% clamp load and dynamically computer balanced for smooth operation even at high RPMs.

Vehicle Fitment: This clutch kit is compatible with a range of Mazda MX-5 Miata models from 2016 to 2018, including various trim levels equipped with a 2.0 L4 GAS FI 1998cc engine. Here's a list of compatible models:

  • 2016-2018: Mazda MX-5 Miata Club, GS, GT, GX, Grand Touring, Sport
  • 2017-2018: Mazda MX-5 Miata RF Club, RF GS, RF GT, RF Grand Touring

Owners of these Mazda MX-5 Miata models can enjoy enhanced performance and reliability with the HD/Perf Street Sprung Clutch Kit from ACT.

Product Description: HD/Perf Street Sprung Clutch Kit

The HD/Perf Street Sprung Clutch Kit, identified as ZM12-HDSS, represents a blend of performance and streetability engineered by ACT. Weighing 26.8 pounds, this kit offers a torque capacity of 312 ft/lbs, exceeding OE standards by 46%. Featuring an organic disc material with a clutch disc diameter of 8.8 inches (224mm) and an input shaft diameter of 0.9375 inches, it is designed to deliver reliable performance on both the street and the track.

At its core lies ACT's popular Heavy Duty pressure plate, renowned for its exclusive diaphragm design, which increases clamp load, reduces deflection, and maximizes clutch life. Each diaphragm undergoes a meticulous four-stage heat-treating process, ensuring unparalleled performance. Precision cover stampings provide rigidity and consistency, essential for enduring performance under demanding conditions.

The kit incorporates ACT's Performance Street discs, featuring premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, ensuring increased strength and reliability.

Key Features:

  • Feel: Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle.
  • Life: Longer friction life, extended by ACT's exclusive diaphragm design.
  • Quality: Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade.
  • Recommended Use: Suitable for both street and race use, offering a balance of performance and drivability.
  • ACT Difference: Rigorously tested, ensuring 100% clamp load and dynamically computer balanced for smooth operation even at high RPMs.

Vehicle Fitment: This clutch kit is compatible with a range of Mazda MX-5 Miata models from 2016 to 2018, including various trim levels equipped with a 2.0 L4 GAS FI 1998cc engine. Here's a list of compatible models:

  • 2016-2018: Mazda MX-5 Miata Club, GS, GT, GX, Grand Touring, Sport
  • 2017-2018: Mazda MX-5 Miata RF Club, RF GS, RF GT, RF Grand Touring

Owners of these Mazda MX-5 Miata models can enjoy enhanced performance and reliability with the HD/Perf Street Sprung Clutch Kit from ACT.

Frequently Asked Questions

Are ACT clutches balanced?

Yes! All ACT clutch assemblies are computer spin balanced to within .25 oz-in to guarantee help smooth operation across the entire RPM range. For comparison, stock production clutches are typically balanced to within .50 oz-in. Lower is definitely better!

Will an ACT clutch increase pedal effort?

ACT pressure plates are specifically designed to handle high torque applications. With ACT's durable design, expect an increase in pedal effort between 15-40% (Heavy Duty) and 50-80% (Xtreme), depending on the application. Clutches developed with less pedal effort often result in a lack of longevity, torque capacity and/or engagement quality.

Do ACT clutches require a break-in period?

For organic street discs, we recommend breaking in the clutch for 300-500 miles with mild engagement, such as stop-and-go city driving prior to racing or spirited driving. ACT race discs usually only require a few hard slips to lap in the surfaces prior to normal driving or racing. Do not overheat the clutch during the break-in period, as this can result in friction surfaces fusing together, hot spots, and friction surface glazing.

Are ACT clutches repairable or rebuildable?

In some situations, rebuilds or repairs may be possible (see warranty), after inspection of the clutch assembly. Please contact our technical department for further information. Because of special modifications, we do not recommend servicing by a general clutch rebuilder.

How much does an ACT clutch weigh?

The weight of the ACT clutch assembly will usually be the same as a stock OEM clutch assembly.

Frequently Asked Questions

Are ACT clutches balanced?

Yes! All ACT clutch assemblies are computer spin balanced to within .25 oz-in to guarantee help smooth operation across the entire RPM range. For comparison, stock production clutches are typically balanced to within .50 oz-in. Lower is definitely better!

Will an ACT clutch increase pedal effort?

ACT pressure plates are specifically designed to handle high torque applications. With ACT's durable design, expect an increase in pedal effort between 15-40% (Heavy Duty) and 50-80% (Xtreme), depending on the application. Clutches developed with less pedal effort often result in a lack of longevity, torque capacity and/or engagement quality.

Do ACT clutches require a break-in period?

For organic street discs, we recommend breaking in the clutch for 300-500 miles with mild engagement, such as stop-and-go city driving prior to racing or spirited driving. ACT race discs usually only require a few hard slips to lap in the surfaces prior to normal driving or racing. Do not overheat the clutch during the break-in period, as this can result in friction surfaces fusing together, hot spots, and friction surface glazing.

Are ACT clutches repairable or rebuildable?

In some situations, rebuilds or repairs may be possible (see warranty), after inspection of the clutch assembly. Please contact our technical department for further information. Because of special modifications, we do not recommend servicing by a general clutch rebuilder.

How much does an ACT clutch weigh?

The weight of the ACT clutch assembly will usually be the same as a stock OEM clutch assembly.

Free Shipping for the Contiguous Continental States excluding Alaska.

We use UPS, FedEx, and USPS for deliveries. We are not responsible for any shipping problems and shall not be held liable for any "reasonable" delay beyond our advertised delivery time-frames. Shipment by Ground Courier can take up to 6 business days for delivery or Express Courier which can take up to 3 business days for delivery. Shipping time frames are once the order has been processed. Due to high demand, order processing can take 1 to 2 business days.

The on-time delivery guarantee does not apply to shipments that are delayed due to causes beyond the couriers control, including, but not limited to, the following: the unavailability or refusal of a person to accept delivery of the shipment, delays caused by the consignee, acts of God, public authorities acting with actual or apparent authority on the premises, acts or omissions of Customs or similar authorities, riots, circumstances arising before, during, or after a strike or other labor disputes, civil commotions, disruptions in the air or ground transportation network (such as weather phenomena), and natural disasters. For more information on the shipping Limits and Restrictions visit the UPS website at http://www.ups.com.

We do not accept Collect shipments for on-line orders. All shipping charges are charged at the time the order is placed on-line.

Any order received after 3PM PST will not ship until the following business day.

Free Shipping for the Contiguous Continental States excluding Alaska.

We use UPS, FedEx, and USPS for deliveries. We are not responsible for any shipping problems and shall not be held liable for any "reasonable" delay beyond our advertised delivery time-frames. Shipment by Ground Courier can take up to 6 business days for delivery or Express Courier which can take up to 3 business days for delivery. Shipping time frames are once the order has been processed. Due to high demand, order processing can take 1 to 2 business days.

The on-time delivery guarantee does not apply to shipments that are delayed due to causes beyond the couriers control, including, but not limited to, the following: the unavailability or refusal of a person to accept delivery of the shipment, delays caused by the consignee, acts of God, public authorities acting with actual or apparent authority on the premises, acts or omissions of Customs or similar authorities, riots, circumstances arising before, during, or after a strike or other labor disputes, civil commotions, disruptions in the air or ground transportation network (such as weather phenomena), and natural disasters. For more information on the shipping Limits and Restrictions visit the UPS website at http://www.ups.com.

We do not accept Collect shipments for on-line orders. All shipping charges are charged at the time the order is placed on-line.

Any order received after 3PM PST will not ship until the following business day.

PROP 65 WARNING: This product can expose you to chemicals including carbon black, glass wool fibers, and silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

PROP 65 WARNING: This product can expose you to chemicals including carbon black, glass wool fibers, and silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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