TURNING POINT MASTERGUARD PROPELLER HUB FOR 40-150HP / 90-300+HP OUTBOARD MOTORS WITH A 4.25" / 4.75" GEARCASE (501 KIT)

500 Series Installation Kits. The Turning Point Masterguard Propeller Hub System enables the end-user to economically carry a spare or different diameter/pitch propeller to suit the days skiing, fishing or cruising activities.

The MasterGuard Hub design utilises shock and vibration absorbing polymers for unmatched dependability.

  • Lifetime warranty for engines under 200hp.
  • Premium corrosion-resistant brass splines.
  • Eliminate hub system vibration & chatter.
  • Reduce gear shock & engine/drive damage.
  • Reduce prop replacement cost by up to 50%

NOTE: Not applicable with Turning Point’s 10, 20 and 200 Hub Kit series.

NOTE: Motors 200HP and above must use series 700 Hub Kits. Failure to use will void warranty.

Choosing your Turning Point propeller is a two-step process:

  1. Select the Installation Kit to suit the drive shaft on your outboard. Check the table below for your engine model. If not listed, then see other Turning Point hub kits
  2. Choose the propeller to suit this hub kit sold separately
MANUFACTURER SPLINES SUITS MODEL SUITS ENGINES NOTES
Force 15 75hp ('99) / 90hp to 150hp ('95+) 40-150HP with 4.25" Gearcase  
Honda 15 ('95-'98): 75hp, 90hp 40-150HP with 4.25" Gearcase  
Mercury & Mariner 15 2 & 4 stroke) 40 to 60 Bigfoot / 70 (‘87-’89) / 75, 80 (‘78-’89), 90, 100, 115, 125, 140hp / 150 XR4/6
(thru 1993, includes equivalent Mariner Magnum I, II, III.)
EFI CT & SeaPro 4cyl: 40 to 75hp / OptiMax: 75, 90, 115, 125hp
40-150HP with 4.25" Gearcase Props Not Available for '77 & Older models
Suzuki & Johnson use 4 blade props only DF 4 stroke: 50AV, 60AV, 115A, 140, 140A 40-150HP with 4.25" Gearcase  
Mercury & Mariner 15 EFI CT / SeaPro : 90 to150hp / V6 & I6: 135 to 300hp / Verado 135 to 300hp(not HD) / OptiMax: 150, 200, 250hp 90-300+HP with 4.75" Gearcase Use 701 Super Duty Kit for 200+hp Engines.
115hp ProXS CT Only; For ProXS & Verado w/ 1.25” prop shaft, use Mercury Solid Hub kit with the Turning Point Prop.
Mercruiser 15 Alpha One and Bravo One ('83+) 90-300+HP with 4.75" Gearcase Use 701 Super Duty Kit for 200+hp Engines.
If propeller strikes trim tab, replace with Mercury part #822777A1.
SKU 203501
Barcode # 652480200502
Brand Turning Point
Shipping Weight 1.5000kg

TURNING POINT MASTERGUARD HUB KIT 501 MERC/MCRUISER/SUZ/HON

SKU: 203501
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TURNING POINT MASTERGUARD PROPELLER HUB FOR 40-150HP / 90-300+HP OUTBOARD MOTORS WITH A 4.25" / 4.75" GEARCASE (501 KIT)

500 Series Installation Kits. The Turning Point Masterguard Propeller Hub System enables the end-user to economically carry a spare or different diameter/pitch propeller to suit the days skiing, fishing or cruising activities.

The MasterGuard Hub design utilises shock and vibration absorbing polymers for unmatched dependability.

  • Lifetime warranty for engines under 200hp.
  • Premium corrosion-resistant brass splines.
  • Eliminate hub system vibration & chatter.
  • Reduce gear shock & engine/drive damage.
  • Reduce prop replacement cost by up to 50%

NOTE: Not applicable with Turning Point’s 10, 20 and 200 Hub Kit series.

NOTE: Motors 200HP and above must use series 700 Hub Kits. Failure to use will void warranty.

Choosing your Turning Point propeller is a two-step process:

  1. Select the Installation Kit to suit the drive shaft on your outboard. Check the table below for your engine model. If not listed, then see other Turning Point hub kits
  2. Choose the propeller to suit this hub kit sold separately
MANUFACTURER SPLINES SUITS MODEL SUITS ENGINES NOTES
Force 15 75hp ('99) / 90hp to 150hp ('95+) 40-150HP with 4.25" Gearcase  
Honda 15 ('95-'98): 75hp, 90hp 40-150HP with 4.25" Gearcase  
Mercury & Mariner 15 2 & 4 stroke) 40 to 60 Bigfoot / 70 (‘87-’89) / 75, 80 (‘78-’89), 90, 100, 115, 125, 140hp / 150 XR4/6
(thru 1993, includes equivalent Mariner Magnum I, II, III.)
EFI CT & SeaPro 4cyl: 40 to 75hp / OptiMax: 75, 90, 115, 125hp
40-150HP with 4.25" Gearcase Props Not Available for '77 & Older models
Suzuki & Johnson use 4 blade props only DF 4 stroke: 50AV, 60AV, 115A, 140, 140A 40-150HP with 4.25" Gearcase  
Mercury & Mariner 15 EFI CT / SeaPro : 90 to150hp / V6 & I6: 135 to 300hp / Verado 135 to 300hp(not HD) / OptiMax: 150, 200, 250hp 90-300+HP with 4.75" Gearcase Use 701 Super Duty Kit for 200+hp Engines.
115hp ProXS CT Only; For ProXS & Verado w/ 1.25” prop shaft, use Mercury Solid Hub kit with the Turning Point Prop.
Mercruiser 15 Alpha One and Bravo One ('83+) 90-300+HP with 4.75" Gearcase Use 701 Super Duty Kit for 200+hp Engines.
If propeller strikes trim tab, replace with Mercury part #822777A1.
SKU 203501
Barcode # 652480200502
Brand Turning Point
Shipping Weight 1.5000kg