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Description

Strongflex 031929B – BMW gearbox mount Motorsport, polyurethane (80ShA)

The Strongflex 031929B is a polyurethane gearbox mount in motorsport specification (80ShA) for a wide range of rear-wheel-drive BMWs, from the E21 and E30 to the F30, Z4 and even the new Toyota Supra. It replaces the original rubber mount with OE numbers 22316799331, 22322282340, 22316799330, 22316796617, 22316796619, 22316875904 and 22312284819.

The original rubber mount flexes under hard acceleration and clutch kicks, causing the gearbox to move, the gear lever to jump and power to be lost. The polyurethane version holds the gearbox firmly in place: more direct power transfer to the wheels and a tighter shift feel. Because the mount is harder than rubber, it transmits more vibration to the body; it is therefore intended for motorsport use.

Strongflex polyurethane is resistant to oil, heat and road salt and lasts many times longer than rubber. Assembly grease is included.

Key benefits

• Motorsport hardness 80ShA for a firmly held gearbox
• More direct power transfer to the wheels
• Tighter shift feel, no more gear lever jumping about
• Polyurethane: resistant to oil, heat and road salt, lasts much longer than rubber
• Very wide fitment across BMW RWD models and the Supra DB
• Replaces seven OE numbers
• Assembly grease included

Suitable for

BMW (rear-wheel drive, petrol)

• 1 Series E81 / E82 / E87 / E88 / 1M, F20 / F21 RWD
• 2 Series F22 / F23 / F87 RWD / M2
• 3 Series E21 (1 per car), E30 (not for M3), E36 / M3, E46 / M3 (also xi/xd), E90-E93 RWD (not M3 or 4×4), F30 / F31 / F34 / F80 RWD / M3
• 4 Series F32 / F33 / F36 / F82 / F83 RWD / M4
• 5 Series E34, E39, F10 / F11 / F07 (xDrive only)
• 6 Series F06 / F12 / F13 (xDrive only), 7 Series E32, F01 / F02 (xDrive only), 8 Series E31
• Z3 E36/7, Z4 E85 / E86 / Z4M, Z4 E89, Z4 G29, Z8 E52

Toyota Supra V (DB, 2019-)

Technical specifications

• Manufacturer: Strongflex
• Catalogue number: 031929B
• Material: polyurethane (PUR/PU)
• Hardness: 80ShA (motorsport)
• OE numbers: 22316799331, 22322282340, 22316799330, 22316796617, 22316796619, 22316875904, 22312284819
• Diagram: S0329
• Pieces per pack: 1, required per car: 2 (E21: 1)
• Assembly grease: included

Fitting and delivery

Support the gearbox with a jack, lower the gearbox crossmember and swap the mounts; replace them in pairs. Use the supplied grease and tighten the bolts to the specified torque. Allow half an hour of work. Note: not suitable for 4×4 versions (xi, xd, xDrive, except those listed above) or for diesel engines. This product is in stock and ships immediately.

The Strongflex 031929B holds your BMW’s gearbox firmly in place, so every clutch kick goes straight to the wheels.

Why choose this Strongflex 031929B?

Strongflex is the benchmark in polyurethane suspension and drivetrain parts, with a fit modelled exactly on the original mount. For a drift car or track car, this 80ShA mount is the logical upgrade; if you want more comfort for the road, take a look at the yellow 90ShA versions in our Strongflex range.

Frequently asked questions

How many mounts do I need?

Two per car, except on the E21, which has one. Packed individually.

Does the mount fit xDrive or diesel models?

No, except for the xDrive versions explicitly listed. Diesel engines are excluded.

Does polyurethane cause more vibration?

Yes, the 80ShA motorsport version transmits more vibration than rubber. This is noticeable in road use.

What is the delivery time?

The mount is in stock and ships immediately.

For many BMW models we stock the Strongflex SPORT (yellow) range; everything else is delivered very quickly, in around 4 to 7 days.

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.