Underwater Gear

Keep your boat running smooth and tracking true with precision underwater gear from WaterSkis.com. Whether you're replacing a worn Mastercraft drive shaft, upgrading a Moomba rudder, or sourcing an exact-fit Supra strut, we carry genuine OEM and compatible parts built to match factory performance. This category includes critical inboard components like drive shafts, struts, rudders, and other hardware essential to your boat’s handling and power delivery.

Need to find the right part fast? Use our Boat Part Lookup Tool to identify inboard boat underwater gear for your exact year, make, and model—no guesswork required. We stock parts for top ski and wake brands, including Mastercraft, Moomba, and Supra, with quality you can trust in deep water or shallow turns.

For smooth rides and confident control, trust WaterSkis.com for the underwater gear that keeps your boat performing its best.

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  • OJ Prop 14.25X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 OJ Prop 14.25X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 14.25X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $782.00
    $684.25
    OJ Prop 14.25X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 The XMP EDGE is the first propeller in our industry designed specifically for the V-drive wakeboard boat. This prop offers a larger diameter with lower pitch to better handle the additional...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $782.00
    $684.25
    Subtotal:
    Add to Cart
  • OJ Prop 14.25X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 OJ Prop 14.25X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 14.25X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $782.00
    $684.25
    OJ Prop 14.25X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 The XMP EDGE is the first propeller in our industry designed specifically for the V-drive wakeboard boat. This prop offers a larger diameter with lower pitch to better handle the additional...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $782.00
    $684.25
    Subtotal:
    Add to Cart
  • OJ Prop 17X16-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X16-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X16-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X15.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X15.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X15.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X19.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X19.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X19.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X14-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X14-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X14-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X15-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X15-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X15-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X17-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X17-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X17-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 16.5X16.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 16.5X16.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16.5X16.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
    Add to Cart
  • OJ Prop 13.9X14.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 OJ Prop 13.9X14.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 13.9X14.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.9X14.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
  • OJ Prop 13.7X19.5-4 Blade | Splined | Bore 1 1/8" | RH | 0.110 OJ Prop 13.7X19.5-4 Blade | Splined | Bore 1 1/8" | RH | 0.110
    Quick view

    OJ Prop 13.7X19.5-4 Blade | Splined | Bore 1 1/8" | RH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.7X19.5-4 Blade | Splined | Bore 1 1/8" | RH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
  • OJ Prop 13.7X19.5-4 Blade | Keyed | Bore 1 1/8" | RH | 0.110
    Quick view

    OJ Prop 13.7X19.5-4 Blade | Keyed | Bore 1 1/8" | RH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.7X19.5-4 Blade | Keyed | Bore 1 1/8" | RH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
  • OJ Prop 14.25X14.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 14.25X14.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $782.00
    $684.25
    OJ Prop 14.25X14.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110 The XMP EDGE is the first propeller in our industry designed specifically for the V-drive wakeboard boat. This prop offers a larger diameter with lower pitch to better handle the additional...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $782.00
    $684.25
    Subtotal:
    Add to Cart
  • OJ Prop 14.25X14-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 14.25X14-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $782.00
    $684.25
    OJ Prop 14.25X14-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110 The XMP EDGE is the first propeller in our industry designed specifically for the V-drive wakeboard boat. This prop offers a larger diameter with lower pitch to better handle the additional...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $782.00
    $684.25
    Subtotal:
    Add to Cart
  • OJ Prop 13.7X19.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 OJ Prop 13.7X19.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 13.7X19.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.7X19.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
  • OJ Prop 13.7X19.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 13.7X19.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.7X19.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
  • OJ Prop 13.7X17.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 OJ Prop 13.7X17.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 13.7X17.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.7X17.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
  • OJ Prop 13.7X17.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 13.7X17.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.7X17.5-4 Blade | Keyed | Bore 1 1/8" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
  • OJ Prop 13.7X17-4 Blade | Splined | Bore 1 1/8" | RH | 0.110 OJ Prop 13.7X17-4 Blade | Splined | Bore 1 1/8" | RH | 0.110
    Quick view

    OJ Prop 13.7X17-4 Blade | Splined | Bore 1 1/8" | RH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.7X17-4 Blade | Splined | Bore 1 1/8" | RH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
  • OJ Prop 13.7X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 OJ Prop 13.7X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 13.7X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.7X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $641.00
    $561.00
    Subtotal:
    Add to Cart
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