IRP - Individual Racing Parts Guibos and Flex Discs for MINI

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Find BMW driveshaft and axle shaft parts, including flex discs (aka: the guibo) is a vibration dampener mounted on the back of the transmission. The flex disc acts as a buffer between the transmission's output shaft and the driveshaft leading back to the car's differential. Visual inspection is the only way to tell if the disc is beginning to wear. Cars with worn discs will notice a harsh vibration when starting from a stop and the disc should be replaced (along with the center support bearing) ASAP.
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IRP Performance Aluminum & Polyurethane Flex Disc - E36 E46 Z3 Z4 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
IRP - Individual Racing Parts - Corporate Logo
T#:401430
Part#: IRPFD-78-12
In Stock
$ 123.99 USD
Free Shipping
$ 123.99 USD
Free Shipping

Stock rubber flex discs allow for a slight amount of give, especially under heavy acceleration and, depending on the amount of force applied, could potentially tear or split. This slight flex/give can prevent instantaneous transfer of force to the wheels, making accelerations unpredictable, or even lead to your vehicle being stuck on the side of the track. To combat this, IRP's Performance Flex Disc was developed. Made of CNC machined aluminum, this flex disc won't actually flex, and the polyurethane bushings will only provide a enough give to dampen some vibrations and prevent damaging the transmission. This is perfect for high torque applications such a drag cars and dedicated track cars that want immediate response and long term reliability.

78mm Diameter with fitment for M12 nuts/bolts.

Applicatons: 
1992-1998 E36 BMW 318i 318is 318ti 318ic - Manual Transmission 
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic - Manual and Automatic Transmission 
1992-1998 E36 BMW 328i 328is 328ic - Automatic Transmission 
1999-2005 E46 BMW 323i 323ci 325i 325ci - Manual Transmission 
1997-2002 Z3 BMW Z3 1.9 - Manual Transmission 
1999-2000 Z3 BMW Z3 2.3 M52TU - Manual and Automatic Transmission 
2001-2002 Z3 BMW Z3 2.5i - Manual Transmission 
1997-4/1999 Z3 BMW Z3 2.8 - Automatic Transmission 
2003-2006 Z4 BMW Z4 2.5i - Manual and Automatic Transmission 

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IRP Performance Aluminum & Polyurethane Flex Disc - E21 E28 E30 E36 Z...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
IRP - Individual Racing Parts - Corporate Logo
T#:401429
Part#: IRPFD-78-10
Ships on Sep 16, 2026
$ 123.99 USD
Free Shipping
$ 123.99 USD
Free Shipping

Stock rubber flex discs allow for a slight amount of give, especially under heavy acceleration and, depending on the amount of force applied, could potentially tear or split. This slight flex/give can prevent instantaneous transfer of force to the wheels, making accelerations unpredictable, or even lead to your vehicle being stuck on the side of the track. To combat this, IRP's Performance Flex Disc was developed. Made of CNC machined aluminum, this flex disc won't actually flex, and the polyurethane bushings will only provide a enough give to dampen some vibrations and prevent damaging the transmission. This is perfect for high torque applications such a drag cars and dedicated track cars that want immediate response and long term reliability.

78mm Diameter with fitment for M10 nuts/bolts.

Fits the following BMWs:
1977-1983  E21  - 320i 
1983-5/1986  E28  - 528e - Manual Transmission 
5/1986-1988  E28  - 528e - Manual or Automatic Transmission 
1984-1991  E30  - 318i, 318is, & 318ic 
1984-1986  E30  - 325e/es (thru 04/1986) 
1986-1991  E30  - 325i, 325is, 325ic 
1987-1991  E30  - 325ix 
1992-1997  E36  - 318i 318is 318ic - For Automatic Transmission only 
1996-1998  Z3  - Z3 1.9 liter roadster

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