IsoFlex Gearbox Couplings


Isoflex flexible couplings provide a sacrificial link that is designed to fail before gearbox damage occurs. Isoflex couplings assist engine mounts to do their job by allowing controlled engine movement to isolate vibration and helping to alleviate thrust-induced drive line misalignment. They are designed to cover a large percentage of Twin Disc and ZF gearboxes, plus many other gearboxes on the market.


Browse our full line of Flexible Shaft Couplings here

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IsoFlex 5"- Yanmar Flexible Shaft Coupling IFC-4400-95

IsoFlex 5"- Yanmar Flexible Shaft Coupling IFC-4400-95

Isoflex Flexible Gearbox Coupler 5" for Yanmar Marine Transmissions.Isoflex flexible couplings provi..

$375.00

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Isoflex 7-1/4"- Allison, Newage, ZF Flexible Shaft Coupling IFC-6300-95

Isoflex 7-1/4"- Allison, Newage, ZF Flexible Shaft Coupling IFC-6300-95

Isoflex Flexible Gearbox Coupler 7-1/4" for Allison, Newage and ZF Marine Transmissions.Isoflex flex..

$603.00

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IsoFlex 4"- Yanmar Flexible Shaft Coupling IFC-4200-90

IsoFlex 4"- Yanmar Flexible Shaft Coupling IFC-4200-90

Isoflex Flexible Gearbox Coupler 4" for Yanmar Marine Transmissions.Isoflex flexible couplings prov..

$334.00

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Isoflex 11"- Twin Disc Flexible Shaft Coupling IFC-8695-HT

Isoflex 11"- Twin Disc Flexible Shaft Coupling IFC-8695-HT

Isoflex Flexible Gearbox Coupler 11" for Twin Disc Marine Transmissions. (Plus Rated)Isoflex flexibl..

$2,610.00

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Isoflex 4-3/4"- Twin Disc, ZF Flexible Shaft Coupling IFC-6000-95

Isoflex 4-3/4"- Twin Disc, ZF Flexible Shaft Coupling IFC-6000-95

Isoflex Flexible Gearbox Coupler 4-3/4" for Twin Disc and ZF Marine Transmissions.Isoflex flexible c..

$509.00

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Isoflex 10-1/2"- Newage, Twin Disc, ZF Flexible Shaft Coupling IFC-8534-95

Isoflex 10-1/2"- Newage, Twin Disc, ZF Flexible Shaft Coupling IFC-8534-95

Isoflex Flexible Gearbox Coupler 10-1/2" for Newage, Twin Disc and ZF Marine Transmissions.Isoflex f..

$2,085.00

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Isoflex 5"- Yanmar, ZF Flexible Shaft Coupling IFC-4550-95

Isoflex 5"- Yanmar, ZF Flexible Shaft Coupling IFC-4550-95

Isoflex Flexible Gearbox Coupler 5" for Yanmar and ZF Marine Transmissions.Isoflex flexible coupling..

$369.00

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Isoflex 7-1/4"- Allison, Newage, ZF Flexible Shaft Coupling IFC-6300-HT

Isoflex 7-1/4"- Allison, Newage, ZF Flexible Shaft Coupling IFC-6300-HT

Isoflex Flexible Gearbox Coupler 7-1/4" for Allison, Newage and ZF Marine Transmissions. (Plus Rated..

$621.00

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Isoflex 5-3/4"- Borg Warner, Hurth, ZF Flexible Shaft Coupling IFC-6100-95

Isoflex 5-3/4"- Borg Warner, Hurth, ZF Flexible Shaft Coupling IFC-6100-95

Isoflex Flexible Gearbox Coupler 5-3/4" for Borg Warner, Hurth and ZF Marine Transmissions.Isoflex f..

$470.00

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IsoFlex 4"- Volvo Flexible Shaft Coupling IFC-4600-95

IsoFlex 4"- Volvo Flexible Shaft Coupling IFC-4600-95

Isoflex Flexible Gearbox Coupler 4" for Volvo Marine Transmissions.Isoflex flexible couplings provid..

$323.00

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Isoflex 7-1/4"- ZF Flexible Shaft Coupling IFC-8300-95

Isoflex 7-1/4"- ZF Flexible Shaft Coupling IFC-8300-95

Isoflex Flexible Gearbox Coupler 7-1/4" for ZF Marine Transmissions.Isoflex flexible couplings provi..

$939.00

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Isoflex 5"- Yanmar, ZF Flexible Shaft Coupling IFC-4550-HT

Isoflex 5"- Yanmar, ZF Flexible Shaft Coupling IFC-4550-HT

Isoflex Flexible Gearbox Coupler 5" for Yanmar and ZF Marine Transmissions. (Plus Rated)Isoflex flex..

$402.00

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Isoflex 7-1/4"- Twin Disc Flexible Shaft Coupling IFC-6400-95

Isoflex 7-1/4"- Twin Disc Flexible Shaft Coupling IFC-6400-95

Isoflex Flexible Gearbox Coupler 7-1/4" for Twin Disc Marine Transmissions.Isoflex flexible coupling..

$648.00

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Isoflex 5-3/4"- Newage, Twin Disc, ZF Flexible Shaft Coupling IFC-6150-95

Isoflex 5-3/4"- Newage, Twin Disc, ZF Flexible Shaft Coupling IFC-6150-95

Isoflex Flexible Gearbox Coupler 5-3/4" for Newage, Twin Disc and ZF Marine Transmissions.Isoflex fl..

$519.00

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IsoFlex 4"- Borg Warner, Hurth, ZF Flexible Shaft Coupling IFC-4300-95

IsoFlex 4"- Borg Warner, Hurth, ZF Flexible Shaft Coupling IFC-4300-95

Isoflex Flexible Gearbox Coupler 4" for Borg Warner, Hurth and ZF Marine Transmissions.Isoflex flexi..

$323.00

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Isoflex 10-1/2"- Newage, Twin Disc, ZF Flexible Shaft Coupling IFC-8534-HT

Isoflex 10-1/2"- Newage, Twin Disc, ZF Flexible Shaft Coupling IFC-8534-HT

Isoflex Flexible Gearbox Coupler 10-1/2" for Newage, Twin Disc and ZF Marine Transmissions. (Pl..

$2,398.00

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Isoflex 5"- Borg Warner, Hurth, Newage, Twin Disc, Volvo, ZF Flexible Shaft Coupling IFC-4500-HT

Isoflex 5"- Borg Warner, Hurth, Newage, Twin Disc, Volvo, ZF Flexible Shaft Coupling IFC-4500-HT

Isoflex Flexible Gearbox Coupler 5" for Borg Warner, Hurth, Newage, Twin Disc, Volvo and ZF Marine T..

$402.00

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Isoflex 9"- Allison, Capitol, Twin Disc, ZF Flexible Shaft Coupling IFC-8100-95

Isoflex 9"- Allison, Capitol, Twin Disc, ZF Flexible Shaft Coupling IFC-8100-95

Isoflex Flexible Gearbox Coupler 9" for Allison, Capitol, Twin Disc and ZF Marine Transmissions.Isof..

$957.00

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Isoflex 5-3/4"- Newage, Twin Disc, ZF Flexible Shaft Coupling IFC-6150-HT

Isoflex 5-3/4"- Newage, Twin Disc, ZF Flexible Shaft Coupling IFC-6150-HT

Isoflex Flexible Gearbox Coupler 5-3/4" for Newage, Twin Disc and ZF Marine Transmissions. (Plus Rat..

$597.00

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Isoflex 5-3/4"- Newage Flexible Shaft Coupling IFC-6125-95

Isoflex 5-3/4"- Newage Flexible Shaft Coupling IFC-6125-95

Isoflex Flexible Gearbox Coupler 5-3/4" for Newage Marine Transmissions. Isoflex flexible coupl..

$470.00

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Isoflex 9"- Twin Disc, ZF Flexible Shaft Coupling IFC-8200-HT

Isoflex 9"- Twin Disc, ZF Flexible Shaft Coupling IFC-8200-HT

Isoflex Flexible Gearbox Coupler 9" for Twin Disc and ZF Marine Transmissions. (Plus Rated)Isoflex f..

$1,171.00

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Isoflex 5"- Borg Warner, Hurth, Newage, Twin Disc, Volvo, ZF Flexible Shaft Coupling IFC-4500-95

Isoflex 5"- Borg Warner, Hurth, Newage, Twin Disc, Volvo, ZF Flexible Shaft Coupling IFC-4500-95

Isoflex Flexible Gearbox Coupler 5" for Borg Warner, Hurth, Newage, Twin Disc, Volvo and ZF Marine T..

$369.00

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Isoflex 9"- Twin Disc, ZF Flexible Shaft Coupling IFC-8200-95

Isoflex 9"- Twin Disc, ZF Flexible Shaft Coupling IFC-8200-95

Isoflex Flexible Gearbox Coupler 9" for Twin Disc and ZF Marine Transmissions.Isoflex flexible coupl..

$1,018.00

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IsoFlex 4"- Paragon Flexible Shaft Coupling IFC-4300-SP-95

IsoFlex 4"- Paragon Flexible Shaft Coupling IFC-4300-SP-95

Isoflex Flexible Gearbox Coupler 4" for Paragon Marine Transmissions.Isoflex flexible couplings prov..

$323.00

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Isoflex 5-3/4"- Borg Warner, Hurth, ZF Flexible Shaft Coupling IFC-6100-HT

Isoflex 5-3/4"- Borg Warner, Hurth, ZF Flexible Shaft Coupling IFC-6100-HT

Isoflex Flexible Gearbox Coupler 5-3/4" for Borg Warner, Hurth and ZF Marine Transmissions. (Plus Ra..

$598.00

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Isoflex 11"- Twin Disc Flexible Shaft Coupling IFC-8695-95

Isoflex 11"- Twin Disc Flexible Shaft Coupling IFC-8695-95

Isoflex Flexible Gearbox Coupler 11" for Twin Disc Marine Transmissions.Isoflex flexible couplings p..

$2,203.00

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Isoflex 7-1/4"- ZF Flexible Shaft Coupling IFC-8300-HT

Isoflex 7-1/4"- ZF Flexible Shaft Coupling IFC-8300-HT

Isoflex Flexible Gearbox Coupler 7-1/4" for ZF Marine Transmissions. (Plus Rated)Isoflex flexible co..

$1,084.00

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Isoflex 4-3/4"- Twin Disc, ZF Flexible Shaft Coupling IFC-6000-HT

Isoflex 4-3/4"- Twin Disc, ZF Flexible Shaft Coupling IFC-6000-HT

Isoflex Flexible Gearbox Coupler 4-3/4" for Twin Disc and ZF Marine Transmissions. (Plus Rated)..

$509.00

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Isoflex 8.07"- ZF Flexible Shaft Coupling IFC-10325-HT

Isoflex 8.07"- ZF Flexible Shaft Coupling IFC-10325-HT

Isoflex Flexible Gearbox Coupler 8.07" for ZF Marine Transmissions. (Plus Rated)Isoflex flexible cou..

$1,985.00

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