Product Description

The Flex Series Urethane Sets from PowerBlock are the fourth generation of PowerBlocks. The Urethane coated weight plates offer the ultimate in smooth and quiet performance in addition to Flex technology (patent pending) in both the weight plates and the selector pins making for the most durable PowerBlock ever. The steel side colored rails are powder coat painted and are on both sides of each block. There no welded parts on the Urethane weight plates. Urethane Series products carry a lifetime home warranty.

The U-70 Stage I Set is expandable later to 70 lbs per hand with the Stage II kits. The U-70 Stage I Set has a weight range of 5-40 lbs per hand and will replace 15 pairs of dumbbells or 615 lbs of free weights.

About the Expansion Kits
The U-70 comes has 2 additional expansions. Stage I is the base unit and can operate independently. Stage II units include the 40lb - 60lb kit and 60lb - 70lb kit. Both need the base and prior expansion kit to operate.  Each of the two add on weight kits in Stage II are sold separately.  



  • Stage 1 Dimensions - 11.75"L x 7"W x 7.25"H
  • Easy to Store
  • Small Footprint
  • 2 Expansions
    • 40-60
    • 60-70

*Stand not included


  • Stage 1 Dimensions - 11.75"L x 7"W x 7.25"H
  • Easy to Store
  • Small Footprint
  • 2 Expansions
    • Base - 5-40LB
    • 40-60LB
    • 60-70LB

*Stand not included
**Expansion sets sold separately


Drops void warranty

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Powerblock Urethane U-70 Weight Set
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PowerBlock Powerblock Urethane U-70 Weight Set

U-70 Stage I Set (5-40 lbs)
Urethane U-70 Stage II Kit (40-60 lbs)

*Requires Base ST1 kit (5 - 40)

Urethane U-70 Stage III Kit (60-70 lbs)

*Requires Base & ST2 kit (40 - 60)

Flat / Incline / Decline Bench

Total: $329.00

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