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Experts In Customer Service
Find The Right Parts For Your Car
Find The Right Parts For Your Car
Experts In Customer Service
Find The Right Parts For Your Car
Find The Right Parts For Your Car
$907.00
Availability:
Many In Stock
Sku: ZM10-HDG4
ACT
Product Description: HD/Race Sprung 4 Pad Clutch Kit
The HD/Race Sprung 4 Pad Clutch Kit, identified as ZM10-HDG4, is a high-performance clutch system engineered by ACT to meet the demands of high horsepower street or race applications. With a weight of 26.8 pounds, this kit provides a torque capacity of 399 ft/lbs, exceeding OE standards by 87%. It features a ceramic clutch disc material with a diameter of 8.8 inches (224mm) and an input shaft diameter of 0.9375 inches.
At the heart of this kit is ACT's renowned Heavy Duty pressure plate, renowned for its exclusive diaphragm design that enhances clamp load, reduces deflection, and maximizes clutch life. Each diaphragm undergoes a meticulous four-stage heat-treating process, ensuring unparalleled performance under extreme conditions. Precision cover stampings ensure rigidity and consistency for reliable operation.
The kit integrates ACT's 4-pad spring-centered race disc, featuring a spring-center design to effectively damp torsional vibrations for quieter operation and resistance to failure under harsh conditions. Spring retainers with wraparound spring windows and thicker stampings provide enhanced spring support, reduce stress concentrations, and increase overall strength and reliability. While engagement may be harsher, shifting is faster, making it ideal for smaller disc sizes in smaller engines.
Key Features:
- Feel: Light to moderate pedal effort, aggressive engagement, with OE to mild gear rattle.
- Life: Moderate friction life, extended by ACT's exclusive diaphragm design.
- Quality: Carefully engineered, precisely assembled, accurately balanced, utilizing select ceramic friction materials for high heat tolerance and maximum performance.
- Recommended Use: Designed specifically for high horsepower street or race applications, providing exceptional performance.
- 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. Compatible models include:
- 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
For enthusiasts seeking uncompromising performance and durability in high horsepower applications, the HD/Race Sprung 4 Pad Clutch Kit from ACT is the ultimate choice, delivering outstanding performance both on the street and the track..
Product Description: HD/Race Sprung 4 Pad Clutch Kit
The HD/Race Sprung 4 Pad Clutch Kit, identified as ZM10-HDG4, is a high-performance clutch system engineered by ACT to meet the demands of high horsepower street or race applications. With a weight of 26.8 pounds, this kit provides a torque capacity of 399 ft/lbs, exceeding OE standards by 87%. It features a ceramic clutch disc material with a diameter of 8.8 inches (224mm) and an input shaft diameter of 0.9375 inches.
At the heart of this kit is ACT's renowned Heavy Duty pressure plate, renowned for its exclusive diaphragm design that enhances clamp load, reduces deflection, and maximizes clutch life. Each diaphragm undergoes a meticulous four-stage heat-treating process, ensuring unparalleled performance under extreme conditions. Precision cover stampings ensure rigidity and consistency for reliable operation.
The kit integrates ACT's 4-pad spring-centered race disc, featuring a spring-center design to effectively damp torsional vibrations for quieter operation and resistance to failure under harsh conditions. Spring retainers with wraparound spring windows and thicker stampings provide enhanced spring support, reduce stress concentrations, and increase overall strength and reliability. While engagement may be harsher, shifting is faster, making it ideal for smaller disc sizes in smaller engines.
Key Features:
- Feel: Light to moderate pedal effort, aggressive engagement, with OE to mild gear rattle.
- Life: Moderate friction life, extended by ACT's exclusive diaphragm design.
- Quality: Carefully engineered, precisely assembled, accurately balanced, utilizing select ceramic friction materials for high heat tolerance and maximum performance.
- Recommended Use: Designed specifically for high horsepower street or race applications, providing exceptional performance.
- 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. Compatible models include:
- 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
For enthusiasts seeking uncompromising performance and durability in high horsepower applications, the HD/Race Sprung 4 Pad Clutch Kit from ACT is the ultimate choice, delivering outstanding performance both on the street and the track..
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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