SKU: 57627033661

EXEDY Racing Clutch Builder Series Triple Metallic Clutch Kit (HMR300)

Sale price$869.15 Regular price$965.72
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Description

EXEDY Racing Clutch Builder Series Triple Metallic Clutch Kit (HMR300)For high powered applications, EXEDY offers twin and triple Multi Plate clutches. These are designed for high power street action as well as drag, road and rally racing. The twin plate clutches are rated for approximately 500 ft lbs of torque and the triple plates are rated for approximately 800 ft lbs of torque, both figures at the flywheel. Twins come with both spring damper discs or solid discs depending on application, whereas triples are all

For high-powered applications, EXEDY offers twin and triple Multi-Plate clutches. These are designed for high power street action as well as drag, road and rally racing. The twin plate clutches are rated for approximately 500 ft/lbs of torque and the triple plates are rated for approximately 800 ft/lbs of torque, both figures at the flywheel. Twins come with both spring damper discs or solid discs depending on application, whereas triples are all solid discs and not recommended for street use.

Notes:
All referenced torque ratings are measured at the wheels
SFI 1.1 Approved - Certified for use in Competitive Motorsports

Features:

  • Triple friction plates for up to 800 lbs.-ft.
  • More friction area means a smaller diameter assembly for less inertia.
  • Quicker shifts and faster lap times
  • All multi-plate clutch kits come with lightweight chromoly flywheel
  • Purple anodized forged aluminum cover
  • Strap or lug drive, depending on application
  • Spring damper discs or solid discs
  • Cerametallic or carbon friction material
  • SFI approved

If you've modified your engine and substantially boosted horsepower and torque, a single-plate clutch may simply be inadequate to prevent slippage under full throttle. EXEDY has the solution for engines that deliver as much as 800 lbs.-ft. of torque by doubling the number of plates. The extra friction area also permits using a smaller-diameter assembly for less inertia. The heaviest components of the clutch system are the clutch cover, plates and flywheel. Low-inertia discs allow the transmission to synchronize in a shorter interval of time, eliminating time loss during shift changing while also reducing stress on drivetrain components. The weight of a carbon clutch disc is one third that of a metallic disc.

For most streetable applications, the preferred clutch disc is the cerametallic style with a damper hub. This style of disc will have a consistent feel throughout the day, from the first cold start of the day to a launch from the Christmas Tree after a heat-inducing burnout. The damper hub will help with a smooth launch and improved gearchange feel, as well as eliminate gear rattle moderate speeds. Gear rattle is caused by variations in crankshaft rotational speed, as individual cylinders fire. That in turn makes the gear teeth bounce and rattle against each other as you head on down the road.

A more ambitiously-modified vehicle, used mostly for drag racing, autocrossing or rallying might benefit from the use of a Carbon-D friction disc, Faced with pure carbon fiber, laid one strand at a time and baked at 3600° to cure, carbon fiber has an interesting characteristic: it's coefficient of friction (COF) gets higher as it gets hotter. Unfortunately, it's inconveniently low when at room temperatures, rising to the same COF range as cerametallic friction material when warmed properly. Used in a street vehicle, its inconsistent takeup may be annoying in a daily driver. Carbon fiber is very long-lived in heavy-duty use, however. Carbon-D friction discs have a spring-dampener hub for easy shifting and quiet gears. Carbon-D is equipped with a new dual stage damper, a low-load stage and rapid-acceleration stage, both of which are individually tuned for each car type.

For a dedicated race or track car, Carbon-R friction is preferred. The lack of a dampener hub may mean a fair amount of harshness, vibration and noise may intrude into the cabin or be felt in the gearshift or clutch pedal. The dampened hub, combined with the lighter weight of the whole assembly may make stating up difficult to do without some initial judder. The advantages in shifting speed and torque capacity are the payoff for this lack of refinement.

Due to the inherent properties of the carbon material, EXEDY suggests the proper way to bring the discs up to operating temperature. The correct method is three sequential five second "slips" of the clutch within 30 seconds at low RPM. This will heat the discs so they will hold the specified torque rating.

 

 

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Exchange/Return Notes
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SKU: 57627033661

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Kelly Spencer
Lexington, US
★★★★★ 4
Great for sensitive skin but they could use more texture
I am glad these don't cause a rash on my son's sensitive skin but I don't really like how slippery/slimey these wipes are since it makes it harder to clean my kid's bottom. I have to use more wipes than I'd like because a single wipe doesn't really have the texture to get all the mess off. I do like these wipes to give my kids to wipe their faces and hands since my kids say they are soft, but their softness makes them less effective at wiping off messes on the bottom of my toddler. I think I will stick with less expensive brands of wipes that have a texture that is better at cleaning off my little guy.
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Reviewed in the United States on April 24, 2016
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Northside Homestead
Carnegie, US
★★★★★ 5
Must try!
I LOVE the Pampers Sensitive Wipes! Excellent quality. They don't rip or tear when wiping... feel almost like using a real cloth. Much better than other brands I've tried. I've been using this brand faithfully for 3 years and have never been disappointed.
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Reviewed in the United States on May 14, 2016
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J-Ma
Carnegie, US
★★★★★ 5
Absorbent but sometimes no indicator.
So sometimes I get the diapers with the indicator stripe and sometimes I get the nice decorative Sesame Street kind that has no clear indicator. Either way no complaints. Haven't had a blowout yet on any size. Tips on preventing blowouts: 1. Make sure you have the right size! 2. Make sure put the diaper on right. (Squirmy kid) 3. Make sure the diaper flares are out around the thighs. 4. Make sure you change the diaper often enough. 5. Too much desitin can make blowouts happen more often.
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Reviewed in the United States on August 27, 2017
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Edobedo
Belleville, US
★★★★★ 3
Just OK
Not too impressed. Thickness is good but I don't like the smell and the fibers/lints it leaves on my baby's skin. I like other brands better.
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Reviewed in the United States on April 26, 2016
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Amazon Customer
Port Orchard, US
★★★★★ 5
Great water flosser
Color: Pink+purple
Got it for my 10 year old with braces and it works great! She even takes it to sleepovers! It’s so portable and the travel safe design is great. It’s a very reasonable price as well. Would highly recommend
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Reviewed in the United States on December 2, 2025

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