JP4-HDSS - HD-O/Perf Street Sprung
was
$502.00
Special Price
$426.70
Availability:
Out of stock
SKU
JP4-HDSS
Also Available:
Specifications
| Item Description | HD-O/Perf Street Sprung |
|---|---|
| Product Weight (lbs.) | 21.9 |
| Torque Capacity (ft/lbs.) | 479 |
| Torque Capacity Over OE | 21% |
| Disc Material | Organic |
| Clutch Disc Diameter (Inches) | 11 |
| Clutch Disc Diameter (Millimeters) | 280 |
| Input Shaft Diameter (inches) | 1.125 |
| Pressure Plate Type | Heavy Duty |
| Warranty | 12 Months (view details) |
Description
JP4-HDSS kit features ACT's highly regarded Heavy Duty pressure plate and most popular street disc delivering generous torque capacity, smooth precise feel, quiet operation and increased toughness to withstand the rigors of spirited street and off-road use. ACT’s exclusive diaphragm design increases clamp load, reduces deflection and maximizes clutch life. All diaphragms endure a four-stage heat-treating process for unparalleled performance. ACT precision pressure plate cover stampings provide rigidity and consistency while precision machined pressure plate castings absorb heat. ACT’s performance street discs boast quality parts throughout with robust center sections, premium organic friction materials for exceptional wear and improved heat capacity which are steel-backed for greater burst strength and durability.
| Feel | Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle, good driveability |
|---|---|
| Life | Longer friction life, extended by ACT's exclusive diaphragm design, increased durability and heat capacity |
| Quality | Carefully engineered, precisely assembled, accurately balanced, with superior organic friction materials for heat tolerance and reduced fade, premium bearings and hardware |
| Recommended Use | Recommended for street or off-road use |
| ACT Difference | 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability, key areas induction hardened for longer life. |
Vehicle Fitment
| Application | Engine |
|---|---|
| 2012 Jeep Wrangler Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2012 Jeep Wrangler Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2012 Jeep Wrangler Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2012 Jeep Wrangler Unlimited Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2012 Jeep Wrangler Unlimited Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2012 Jeep Wrangler Unlimited Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2013 Jeep Wrangler Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2013 Jeep Wrangler Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2013 Jeep Wrangler Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2013 Jeep Wrangler Unlimited Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2013 Jeep Wrangler Unlimited Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2013 Jeep Wrangler Unlimited Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2014 Jeep Wrangler Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2014 Jeep Wrangler Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2014 Jeep Wrangler Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2014 Jeep Wrangler Unlimited Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2014 Jeep Wrangler Unlimited Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2014 Jeep Wrangler Unlimited Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2015 Jeep Wrangler Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2015 Jeep Wrangler Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2015 Jeep Wrangler Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2015 Jeep Wrangler Unlimited Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2015 Jeep Wrangler Unlimited Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2015 Jeep Wrangler Unlimited Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler 75th Anniversary | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Sport S | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Unlimited 75th Anniversary | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Unlimited Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Unlimited Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Unlimited Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2016 Jeep Wrangler Unlimited Sport S | 3.6 V6 GAS FI 3604cc | DOHC |
| 2017 Jeep Wrangler Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2017 Jeep Wrangler Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2017 Jeep Wrangler Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2017 Jeep Wrangler Unlimited Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2017 Jeep Wrangler Unlimited Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2017 Jeep Wrangler Unlimited Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Sport S | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Unlimited Rubicon | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Unlimited Sahara | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Unlimited Sport | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Unlimited Sport S | 3.6 V6 GAS FI 3604cc | DOHC |
| 2018 Jeep Wrangler JK Unlimited Willys Wheeler | 3.6 V6 GAS FI 3604cc | DOHC |
Kit Contents:
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.