The Stage 2 clutch for this 1992 BMW 325i EV conversion was previously reported in this May 3, 2013.
( http://evbimmer325i.blogspot.com/2012/05/theracing-aluminum-flywheel-blue-left.html ).
Some online research was undertaken to learn more about what the clutch "Stages" represent, and what characteristics might be expected from each of them. For this blog entry data was taken from the eBay products that are offered by F1 Racing (California) on eBay.
Definition of Clutch Stages (as described by VITEK Performance)
Stage 1 - Offers approximately 25% increase in strength and durability over your original equipment clutch while maintaining the same smooth driving characteristics. It comes with a high clamp pressure plate, steel-backed woven organic disk, bearings, and tool.
Stage 2 - This clutch has a dual sprung disc with full face Kevlar®. It offers the optimum street durability with smooth engagement. The characteristics are more of a street/daily driver feel however, this clutch can handle greater strain and will last far longer than the OE Clutch. It comes with a high clamp pressure plate segmented chatter-free Kevlar disc, bearings and installation tool.
Stage 3 - Comes with a dual sprung carbonic disc. It allows for aggressive street and track driving while at the same time still works well for daily driving. It is more aggressive than a full-face disc and will easily handle Turbo/NOS etc. Sharp but smooth engagement with light pedal. It is our best selling clutch because it offers the best of both worlds. It comes with a high-clamp pressure plate, 3-piece disc with carbon or ceramic material, bearings, and the installation tool.
Stage 4 - This clutch has a 6 puck Un-sprung Disc. It is not designed for your daily driver car. When using an un-sprung clutch, you will probably experience moderate chatter. You should be prepared to hear your passenger complaining about the whiplash he or she will get every time you pull away from a light. While it will handle extreme aggressiveness, it is either engaged or disengaged with no ability to ease into the clutch. Its optimum use is designed for rally racing.
Stage 5 - This clutch is for racing only. It is of a 3 puck ceramic design and offers optimum performance for the drag strip.
Stage 1
| Condition: | New | Manufacturer Part Number: |
F04118R0 F04117FA
|
| Warranty: | Yes | Interchange Part Number: | 03-011 KF649-01 03-030 K70206-01 K70238-01 195321 |
| Brand: |
FX Racing
| Surface Finish: | HD ORGANIC; 6061 BILLET ALUMINUM |
| Part Brand: | FX Racing |
FX Racing Stage 1 clutch kit is an upgrade heavy-duty clutch set up for those who seeks streetable high performance clutch. It is a direct factory replacement parts thus no modifications are needed. The clutch kit includes only the highest grade components and it's ready for hot action on street and track. The premium organic friction material for high heat tolerance, quick recovery, good friction and long life. The heavy-duty solid center unit boasts heat treated hub and retainer rivets for the maximum power and durability. The FX Racing pressure plate features special single diaphragm design to increase clamp load. It features induction hardened diaphragm, CNC machined castings, stronger drive straps and rivets. FX Racing pressure plate provides smooth and precise feel with easy modulation. All FX Racing pressure plate is load tested on a special testing tool for quality assurance.
FX Racing Aluminum Flywheels are made using the highest quality, most modern materials available. The flywheel itself is made from 6061 T6 billet aluminum. It is CNC machined at a constant surface speed for durability and finish. The friction surface is made from high carbon alloy steel. It is incredibly durable allowing the user to use just about any clutch disc material available from organic to Kevlar and even sintered iron. The friction plate can be machined or replaced as needed. The mass at the center of the flywheel is retained for strength, but the mass at the outside is eliminated for optimum performance.
- Ultra light and weighs only 10.4 lbs
- Meets or exceeds SFI 1.1 specification
- Course ground surface to maintain coefficient of friction
- Stepped pin to maintain plate balance and placement
- Tig-welded safety tab to eliminate ring gear separation
- Heilicoil bolt holes to insure proper torque value and eliminate thread damage
- A set of brand new 8 ea. flywheel bolts are included
- NOTE: Replacement of dual mass flywheel may cause added gear noise
- FX Racing Lightweight Aluminum Racing Flywheel (10.4 lbs)
- FX Racing Heavy-Duty Pressure Plate
- FX Racing Stage 1 HD Full Face Rigid Disc (240mm, 10 spline)
- Release Bearing, Pilot Bearing, Alignment Tool, and Installation Guide
- This complete clutch kit and flywheel package includes:
Horsepower Rating: 342 HP / Torque Capacity: 315 ft/lbs
Stage 2
| Condition: | New | Manufacturer Part Number: | F04118R1 F04117FA |
| Warranty: | Yes | Interchange Part Number: | 03-011 KF649-01 03-030 K70206-01 K70238-01 195321 |
| Brand: | FX Racing | Surface Finish: | CARBON KEVLAR; 6061 BILLET ALUMINUM |
| Part Brand: | FX Racing |
FX Racing Stage 2 clutch kit is a step up from our Stage 1 clutch kit. This is a versatile set up for the street and on the track. It provides a smooth engagement yet it can holds 50%+ more power over stock clutches. This is a direct factory replacement clutch kit thus no modifications are needed and the clutch kit includes only the highest grade components from world's leading high performance clutch manufacturer. The Carbonized Kevlar friction material is used on all Stage 2 clutch kit to have higher burst strength and heat tolerance. The heavy-duty sprung center with heat treated springs and retainer rivets to increase strength and reliability. The FX Racing pressure plate features special single diaphragm design to increase clamp load. It features induction hardened diaphragm, CNC machined castings, stronger drive straps and rivets. FX Racing pressure plate provides smooth and precise feel with easy modulation. All FX Racing pressure plate is load tested on a special testing tool for quality assurance.
FX Racing Aluminum Flywheels are made using the highest quality, most modern materials available. The flywheel itself is made from 6061 T6 billet aluminum. It is CNC machined at a constant surface speed for durability and finish. The friction surface is made from high carbon alloy steel. It is incredibly durable allowing the user to use just about any clutch disc material available from organic to Kevlar and even sintered iron. The friction plate can be machined or replaced as needed. The mass at the center of the flywheel is retained for strength, but the mass at the outside is eliminated for optimum performance.
- Ultra light and weighs only 10.4 lbs
- Meets or exceeds SFI 1.1 specification
- Course ground surface to maintain coefficient of friction
- Stepped pin to maintain plate balance and placement
- Tig-welded safety tab to eliminate ring gear separation
- Heilicoil bolt holes to insure proper torque value and eliminate thread damage
- A set of brand new 8 ea. flywheel bolts are included
- NOTE: Replacement of dual mass flywheel may cause added gear noise
- FX Racing 6061 T6 Lightweight Aluminum Racing Flywheel (10.4 lbs)
- FX Racing Heavy-Duty Pressure Plate
- FX Racing Stage 2 Steel Back Carbon Kevlar Sprung Disc (9-1/2" , 10 spline)
- Release Bearing, Pilot Bearing, Alignment Tool, and Installation Guide
- This complete clutch kit and flywheel package includes:
Horsepower Rating: 403 HP / Torque Capacity: 342 ft/lbs
Stage 3
| Condition: | New | Manufacturer Part Number: | F04118R3 F04117FA |
| Warranty: | Yes | Interchange Part Number: | 03-011 KF649-01 03-030 K70206-01 K70238-01 195321 |
| Brand: | FX Racing | Surface Finish: | 6 PUCK SPRUNG COPPER CERAMIC MIBA BILLET ALUMINUM |
| Part Brand: | FX Racing |
FX Racing Stage 3 clutch kit is a direct factory replacement clutch kit and it's designed for those who seek the ultimate in clutch performance and reliability. FX Racing clutch kit includes only the highest grade clutch components from the world's leading racing clutch manufacturers. The 6-puck copper ceramic (also known as MIBA) disc features 12 high-coefficient friction pads that are resistant to slippage and ensures long lasting life. The heavy-duty sprung center unit boasts heat treated springs and retainer rivets for the maximum power and durability. The FX Racing pressure plate features special single diaphragm design to increase clamp load. It features induction hardened diaphragm, CNC machined castings, stronger drive straps and rivets. FX Racing pressure plate provides smooth and precise feel with easy modulation. All FX Racing pressure plate is load tested on a special testing tool for quality assurance.
FX Racing Aluminum Flywheels are made using the highest quality, most modern materials available. The flywheel itself is made from 6061 T6 billet aluminum. It is CNC machined at a constant surface speed for durability and finish. The friction surface is made from high carbon alloy steel. It is incredibly durable allowing the user to use just about any clutch disc material available from organic to Kevlar and even sintered iron. The friction plate can be machined or replaced as needed. The mass at the center of the flywheel is retained for strength, but the mass at the outside is eliminated for optimum performance.
- Ultra light and weighs only 10.4 lbs
- Meets or exceeds SFI 1.1 specification
- Course ground surface to maintain coefficient of friction
- Stepped pin to maintain plate balance and placement
- Tig-welded safety tab to eliminate ring gear separation
- Heilicoil bolt holes to insure proper torque value and eliminate thread damage
- A set of brand new 8 ea. flywheel bolts are included
- NOTE: Replacement of dual mass flywheel may cause added gear noise
- FX Racing Lightweight Aluminum Racing Flywheel
- FX Racing Heavy-Duty Pressure Plate
- FX Racing Stage 3 'MIBA' 6-Puck Copper Ceramic Sprung Disc (9-1/2" , 10 spline)
- Release Bearing, Pilot Bearing, Alignment Tool, and Installation Guide
- This complete clutch kit and flywheel package includes:
Horsepower Rating: 487 HP / Torque Capacity: 435 ft/lbs
Stage 4
| Condition: | New | Manufacturer Part Number: | F04118R4 F04117FA |
| Warranty: | Yes | Interchange Part Number: | 03-011 KF649-01 03-030 K70206-01 K70238-01 195321 |
| Brand: | FX Racing | Surface Finish: | 6 PUCK RIGID COPPER CERAMIC MIBA BILLET ALUMINUM |
| Part Brand: | FX Racing |
FX Racing Stage 4 clutch kit is a direct factory replacement clutch kit and it's designed for those who seek the ultimate in clutch performance and reliability. FX Racing clutch kit includes only the highest grade clutch components from the world's leading racing clutch manufacturers. The 6-puck copper ceramic (also known as MIBA) disc features 12 high-coefficient friction pads that are resistant to slippage and ensures long lasting life. The heavy-duty solid spline center unit boasts heat treated chromoly for the maximum power and durability. The FX Racing pressure plate features special single diaphragm design to increase clamp load. It features induction hardened diaphragm, CNC machined castings, stronger drive straps and rivets. FX Racing pressure plate provides smooth and precise feel with easy modulation. All FX Racing pressure plate is load tested on a special testing tool for quality assurance.
FX Racing Aluminum Flywheels are made using the highest quality, most modern materials available. The flywheel itself is made from 6061 T6 billet aluminum. It is CNC machined at a constant surface speed for durability and finish. The friction surface is made from high carbon alloy steel. It is incredibly durable allowing the user to use just about any clutch disc material available from organic to Kevlar and even sintered iron. The friction plate can be machined or replaced as needed. The mass at the center of the flywheel is retained for strength, but the mass at the outside is eliminated for optimum performance.
- Ultra light and weighs only 10.4 lbs
- Meets or exceeds SFI 1.1 specification
- Course ground surface to maintain coefficient of friction
- Stepped pin to maintain plate balance and placement
- Tig-welded safety tab to eliminate ring gear separation
- Heilicoil bolt holes to insure proper torque value and eliminate thread damage
- A set of brand new 8 ea. flywheel bolts are included
- NOTE: Replacement of dual mass flywheel may cause added gear noise
- FX Racing 6061 T6 Aluminum Lightweight Flywheel (10.4 lbs)
- FX Racing Heavy-Duty Pressure Plate
- FX Racing Stage 4 'MIBA' 6-Puck Copper Ceramic Rigid Disc (9-1/2" , 10 spline)
- Release Bearing, Pilot Bearing, Alignment Tool, and Installation Guide
- This complete clutch kit and flywheel package includes:
Horsepower Rating: 487 HP / Torque Capacity: 435 ft/lbs
Clutch Compatibility
| 1991 | 525i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1992 | 525i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1992 | 325is | Base Coupe 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1992 | 325i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1993 | 525i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1993 | 325is | Base Coupe 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1993 | 325i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1994 | 525i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1994 | 325is | Base Coupe 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1994 | 325i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1994 | 325i | Base Convertible 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1995 | M3 | Lightweight Coupe 2-Door | 3.0L 2990CC l6 GAS DOHC Naturally Aspirated |
| 1995 | M3 | Base Coupe 2-Door | 3.0L 2990CC l6 GAS DOHC Naturally Aspirated |
| 1995 | 525i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1995 | 325is | Base Coupe 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1995 | 325i | Base Sedan 4-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1995 | 325i | Base Convertible 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1996 | M3 | Base Coupe 2-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1996 | 328is | Base Coupe 2-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1996 | 328i | Base Sedan 4-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1996 | 328i | Base Convertible 2-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1997 | Z3 | Roadster | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1997 | M3 | Base Sedan 4-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1997 | M3 | Base Coupe 2-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1997 | 528i | Base Sedan 4-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1997 | 328is | Base Coupe 2-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1997 | 328i | Base Sedan 4-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1997 | 328i | Base Convertible 2-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1998 | Z3 | Roadster | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1998 | Z3 | M Roadster | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1998 | M3 | Base Sedan 4-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1998 | M3 | Base Coupe 2-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1998 | M3 | Base Convertible 2-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1998 | 528i | Base Sedan 4-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1998 | 328is | Base Coupe 2-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1998 | 328i | Base Sedan 4-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1998 | 328i | Base Convertible 2-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1998 | 323is | Base Coupe 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1998 | 323i | Base Convertible 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1999 | Z3 | M Roadster | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1999 | Z3 | M Coupe 2-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1999 | M3 | Base Coupe 2-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1999 | M3 | Base Convertible 2-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 1999 | 328is | Base Coupe 2-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1999 | 328i | Base Convertible 2-Door | 2.8L 2793CC l6 GAS DOHC Naturally Aspirated |
| 1999 | 323is | Base Coupe 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 1999 | 323i | Base Convertible 2-Door | 2.5L 2494CC 152Cu. In. l6 GAS DOHC Naturally Aspirated |
| 2000 | Z3 | M Roadster | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 2000 | Z3 | M Coupe 2-Door | 3.2L 3152CC l6 GAS DOHC Naturally Aspirated |
| 2001 | Z3 | M Roadster | 3.2L 3246CC l6 GAS DOHC Naturally Aspirated |
| 2001 | Z3 | M Coupe 2-Door | 3.2L 3246CC l6 GAS DOHC Naturally Aspirated |
| 2002 | Z3 | M Roadster | 3.2L 3246CC l6 GAS DOHC Naturally Aspirated |
| 2002 | Z3 | M Coupe 2-Door | 3.2L 3246CC l6 GAS DOHC Naturally Aspirated |
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