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FSD Slammer Kit

FSD Slammer Kit

Eliminate your Future Shock 1.0, 1.5, 2.0, or 3.x cartridge and lower your handlebars by 30-50mm. This custom rigid insert has been engineered and lab tested, and it complies with ISO 4210-5 testing standards. 


Included in the kit:

  • FSD Slammer cartridge CNC machined from 7075-T6 aluminum
  • Top cap CNC machined from 6061-T6 alumimum (matte black)


FSD Slammer Weight: 160g

  • 151g lighter than Future Shock 1.5 (311g)
  • 189g lighter than Future Shock 2.0 (349g)


Check out the Installation Video for complete instructions.


Note: The FSD Slammer insert uses a standard 1-1/8" stem clamping diameter. If you plan to install an FSD Slammer kit, you will also need a standard stem (Future Stem does not fit standard steer tubes). 


  • Warning!

    This is an aftermarket product intended to replace the suspension cartridge on bicycles equipped with the Specialized Future Shock 1.0, 1.5, 2.0, or 3.x. It is not a Specialized product. Installation and use of this product may affect the bicycle manufacturer's warranty. 


    Improper installation of this product can lead to slippage or separation of handlebars from the frame. Serious injury or death may result. Always have a qualified professional bicycle mechanic install this product.

  • International Shipping

    Please provide a valid phone number for all international orders.


    International orders may take up to 15 days for delivery depending on your region.


    It is the buyer's responsibility to pay any local taxes or fees when you receive our products in your country. Please review the tariffs and conditions of receipt of goods from the US before placing your order.

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