clutch and flywheel
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centerforce dual-friction clutch kits dual-friction clutch kits are designed specifically for autocross and racing applications a race-proven centrifugal weight system on the pressure plate generates up to a 90 increase in holding capacity over a stock clutch with a minimal increase in clutch pedal pressure the dual-friction clutch disc features unique carbon-fiber facings carbon-fiber facings are lighter more heat and oil resistant and less abrasive than metallic facings commonly used on most other high performance/racing discs all centerforce clutch kits include pressure plate and disc a stock mazda factory release bearing should be used with centerforce clutches centerforce dual-friction clutch kits part number 0000-02-7401 0000-02-7402 0000-02-7421 0000-02-7412 0000-02-7422 0000-02-7423 0000-02-5401 0000-02-5402 0000-02-5403 code req ccccccc 1 1 1 1 1 1 1 1 1 description clutch kit clutch kit clutch kit clutch kit clutch kit clutch kit clutch kit clutch kit clutch kit special
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clutch flywheel centerforce lightweight flywheels centerforce lightweight flywheels provide significant engine performance improvement by enabling engine rpms to reach the optimum power band more quickly all centerforce aluminum flywheels use a steel ring gear and steel heat shield for durability centerforce aluminum flywheel part #0000-02-7207 centerforce lightweight flywheels part number 0000-02-7212 0000-02-7213 0000-02-7207 code req c c 1 1 1 description aluminum flywheel aluminum flywheel aluminum flywheel model engine type rx7 12a rx7 12a 13b nt rx7 t tt year notes 1979-82 approximate weight 9 lbs 215 mm see note below 1983-91 approximate weight 9 lbs 225 mm see note below 1987-95 approximate weight 11 lbs can be used on all rx7 turbo and twinturbo models see note below 1990-93 approximate weight 9 lbs 200 mm 1994-96 approximate weight 9 lbs requires use of centerforce clutch kit part #0000-02-5403 1979-82 215 mm diameter/approximate weight 14 lbs see note below 198
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aluminum flywheel for 5-1/2 clutches this unique lightweight flywheel for 5-1/2 racing clutches weighs approximately 4 pounds and features a steel center heat shield for durability due to its integral ring gear part of the aluminum outer hub the moment of inertia on the flywheel is comparable to all-aluminum flywheels the aluminum outer hub can be replaced when necessary when ring gear teeth become worn another unique feature this flywheel offers is that it can be used with a bottomor top-mount starter mounting position remounting the center steel heat shield to one side or the other of the aluminum outer hub accomplishes this important safety note allen-head mounting bolts should be replaced periodically use only aircraft quality bolts aluminum flywheel with quarter master 5-1/2 clutch assembly part #0000-02-9203 and #0000-02-9103 aluminum flywheel for 5-1/2 clutches part number 0000-02-9203 code req 1 description aluminum flywheel for 5-1/2 clutches model engine type 12a
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clutch flywheel quarter master clutches quarter master clutches provide ultimate performance at high rpms and temperatures without the failures sometimes common to other clutch designs features and benefits include i low moment of inertia i lightweight aluminum clutch cover i unique closed-style design i improved sintered metal friction material that eliminates dusting i allows harder faster acceleration and deceleration into and out of corners i highest torque capacities and lowest wear rates all quarter master clutches and flywheels are built with the intent of making them as inertially light as possible without sacrificing durability we offer both the quarter master 7-1/4 and 5-1/2 2-disc clutch assemblies for rotary applications quarter master 5-1/2 clutch unit the lightweight 5-1/2 clutch unit with aluminum flywheel provides approximately 30 less rotational inertia and weight than the quarter master 7-1/4 clutch unit with aluminum flywheel it only is available for bottom mo
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quarter master clutch replacement parts when replacing clutch packs be sure to check the floater plate and pressure plate for any sign of wear or warpage we also recommend that you carefully check the condition of the pilot bearing a worn pilot bearing can significantly reduce the service life of your clutch and transmission quarter master clutch components quarter master clutch replacement parts part number 0000-02-9111 code req c 1 description clutch pack 7-1/4 gold model engine type 12a 13b year all notes replacement clutch discs for 2-disc clutch unit includes 2-discs spline size 1 x 22 qm part #226062 replacement clutch discs for 2-disc clutch unit includes 2-discs spline size 1 x 22 qm part #225062 one plate required for 2-disc clutch units qm part #509506 one plate required for 2-disc clutch units qm part #105506 qm part #309504 qm part #105504 qm part #209501 qm part #105501 qm part #206503 qm part #205503 0000-02-9121 c 1 clutch pack 5-1/2 gold 12a 13b all 0000-02-9
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quarter master clutch replacement parts continued clutch flywheel part number 0000-02-9112 code req c 1 description release bearing/collar 7-1/4 model engine type 12a 13b year all notes fits most transmissions except pbs mdr-1 qm part #236520 fits pbs mdr-1 gearbox qm part #236521 fits most transmissions except pbs mdr-1 qm part #235520 fits pbs mdr-1 gearbox qm part #235521 bearing without collar qm part #105031 flywheel to counterweight qm part #206507 clutch to flywheel for use with aluminum flywheel qm part #209507 flywheel to counterweight qm part #505001 clutch to flywheel qm part #205508 0000-02-9112-pb 0000-02-9122 c c 1 1 release bearing/collar 7-1/4 release bearing/collar 5-1/2 12a 13b 12a 13b all all 0000-02-9122-pb 0000-02-9122-w0 0000-02-9113 0000-02-9113-aa cccc 1 1 1 1 release bearing/collar 5-1/2 release bearing 5-1/2 bolt kit 7-1/4 bolt kit 7-1/4 12a 13b 12a 13b 12a 13b 12a 13b all all all all 0000-02-9123 0000-02-9128 c c 1 1 bolt kit
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moment of inertia moment of inertia with respect to rotation is called angular momentum angular momentum is the force that has to be overcome to spin a circular component e.g a flywheel and clutch it is the function of the mass of the part and the radius on which the mass is positioned the more centered the mass is on a circular part the lower the angular momentum and the less horsepower is needed to spin the part this translates to the flywheel/clutch assembly being able to accelerate faster at every rpm range for example quarter master s aluminum flywheel and 7-1/4 aluminum clutch unit together are rated at 146.3 inch-pounds in other words the assembly requires approximately 146.3 inch-pounds of force to initiate movement qm s aluminum flywheel and the new compact 5-1/2 aluminum clutch unit require approximately 101 inch-pounds of force to initiate movement a 30 reduction quarter master aluminum flywheel part #4352-11-752a quarter master flywheels part number 4352-11-752a c
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clutch flywheel tilton racing clutches we now carry tilton s popular ot-ii 7-1/4 and ot-iii 5-1/2 racing clutches the ot-ii and ot-iii clutches feature a unique open-style design incorporating many features of the tilton carbon/carbon clutch clutch assemblies include clutch cover assembly pressure plate and floater plate all tilton racing clutches require 2-disc clutch pack to be ordered separately see clutch pack section on page cf-10 an original equipment mazda release bearing can be used tilton racing clutches are not recommended for street use iiii lightest weight and lowest inertia highest burst strength highest torque capacity lowest release load i coolest running i long wearing i durable i self cleaning tilton racing clutches part number 0000-02-9103-tl code req 1 description clutch assembly 5-1/2 model engine type various year all notes clutch pack must be ordered separately see page cf-10 tl part #67-002hg clutch pack must be ordered separately see page cf-10 tl part #6
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tilton 7-1/4 clutch flywheel assembly includes tilton ot-ii 7-1/4 clutch lightweight steel flywheel 2-disc clutch pack and all necessary hardware designed for non-turbo rotaries with 1 x 22 spline size and ring gear tooth count of 116 flywheel weight and moment of inertia 8.2 lbs 136 tilton 7-1/4 clutch flywheel assembly part number 0000-02-9001-tl code req 1 description flywheel/clutch assembly 7-1/4 model engine type various year all notes includes steel flywheel ot-ii 7-1/4 clutch with clutch discs and all hardware tl part #56-253 spline size 1 x 22 tilton clutch replacement parts part number 0000-02-9121-tl 0000-02-9129-tl 0000-02-9111-tl 0000-02-9119-tl 0000-02-9125-tl 0000-02-9115-tl 0000-02-9124-tl 0000-02-9114-tl 0000-02-9122-tl 0000-02-9112-tl 0000-02-9123-tl 0000-02-9113-tl 0000-02-5113-tl new competition part code req 1 1 1 1 1 1 1 1 1 1 1 1 1 description clutch pack 5-1/2 clutch pack 5-1/2 clutch pack 7-1/4 clutch pack 7-1/4 floater plate 5-1/2
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clutch flywheel tilton flywheels tilton steel flywheels unless noted have integral ring gears tilton steel flywheels can have a lower moment of inertia than some aluminum flywheels aluminum flywheels use a steel heat shield and ring gear for durability some flywheels must be special ordered tilton flywheels part number 0000-02-9201-tl code req 1 description flywheel steel 7-1/4 bottom mount model engine type 12a/13b year all notes non-turbo engines only weight and moment of inertia 8.2 lbs 136 tl part #51-300 non-turbo engines only tl part #51-303 turbo engines only weight and moment of inertia 9.5 lbs 184 tl part #51-300t tl part #51-335 tl part #51-330 tl part #51-331 tl part #51-335 0000-02-9207-tl 0000-02-9205-tl 1 1 flywheel steel 7-1/4 top mount flywheel steel 7-1/4 bottom mount flywheel steel 5-1/2 flywheel steel 200 mm standard size clutch flywheel steel 226 mm standard size clutch flywheel steel 5-1/2 nt non-turbo t turbo 12a/13b 13b t tt all all 0000-
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clutch components pressure plates part number n203-16-410a n304-16-410 n311-16-410 code s req 1 1 1 description pressure plate pressure plate pressure plate model engine type 12a 13b all rx7 nt all rx7 t year 1971-83 1983-88 1987-88 notes 215 mm diameter 225 mm diameter 12a 13b models factory competition pressure plate diaphragm pressure 730 kg 240 mm diameter also may be used on 1989-91 rx7 turbos similar to part #n311-16-410 240 mm diameter modified stock plate provides approximately 30-40 higher diaphragm pressure than stock unit also may be used on 230 mm 1989-91 rx7 turbos 240 mm diameter 225 mm diameter 230 mm diameter modified stock pressure plate provides 30 higher diaphragm pressure over stock unit use with stock disc s c 0000-02-7421-ss 1 pressure plate rx7 t 1987-88 je01-16-410b n309-16-410b n310-16-410c 0000-02-7423-ss s s s 1 1 1 1 pressure plate pressure plate pressure plate pressure plate rx7 t rx7 nt rx7 t rx7 tt 1987-88 1989-91 1989-91 1993-95 n315-16-410b b6y3-16
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clutch discs release bearings clutch flywheel part number 4352-16-460 code c req 1 description clutch disc model engine type 12a 13b year notes 1971-82 215 mm diameter features solid hub and organic facing material 1971-82 215 mm diameter 1983-88 225 mm diameter 1987-88 240 mm diameter 1989-91 225 mm diameter 1989-91 230 mm diameter 1993-95 230 mm diameter also recommended for use on 1987-91 rx7 turbos 1990-93 200 mm diameter uses improved disc-facing material 1990-93 200 mm diameter 1994-96 226 mm diameter 1993-96 1988-89 1986-89 1981-85 1971-78 1979-88 12a and 13b non-turbo 1987-88 1989-91 1993-95 1990-97 0863-16-460 n308-16-460a n307-16-460 n309-16-460c n310-16-460b n315-16-460c ssssss 1 1 1 1 1 1 clutch disc clutch disc clutch disc clutch disc clutch disc clutch disc 12a 13b rx7 nt rx7 t rx7 nt rx7 t rx7 tt b6y4-16-460 b623-16-460b bp07-16-460 kl07-16-460 b6y1-16-460a d405-16-460a 0820-16-510 fe84-16-510 f853-16-510 g561-16-510 n315-16-510 b622-16-510 csssccssssss 1 1 1 1 1 1
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