Force USA 50 lb Weight Stack Upgrade (Set of 2) This set adds 50 lb to each of two Force USA weight stacks. On a C20 or Functional Trainer Rack, one set takes dual 200 lb stacks to 250 lb per side. A second set is required to reach Force USA’s 300 lb-per-side maximum on those machines. Force USA rates this upgrade for the C20, Functional Trainer Rack, and Tandem Tower. On the Tandem Tower, a single-stack upgrade reaches that model’s 250 lb max. Force USA notes that adding the plates when the trainer is assembled is simpler than installing them later. Key Features Set of Two: Two 50 lb upgrades — one for each stack on a dual-stack trainer. 200 lb to 250 lb: Each upgrade adds 50 lb to one stack. This set is the first step on C20 or FTR (250 lb per side). 300 lb Requires a Second Set: Force USA’s C20 / FTR maximum of 300 lb per side needs two upgrades per stack (two of these sets). Tandem Tower: One single-stack upgrade reaches that model’s 250 lb max. Compatibility Force USA lists this upgrade for the C20 All-In-One Trainer, Functional Trainer Rack, and Tandem Tower. This listing is the dual 50 lb set. A single-stack SKU is sold separately. An M10-specific dual set is a different Force USA variant and is not this SKU. Who This Is For Built for C20, Functional Trainer Rack, or Tandem Tower owners who have already maxed the stock 200 lb stacks and want 250 lb per side (or a path to 300 lb on C20 / FTR with a second set). Specifications Specification Value Configuration Set of 2 (50 lb per stack) Added Weight 50 lb per stack (100 lb total) Result on Dual 200 lb Stacks 250 lb per side Path to 300 lb / Side Second set required (C20 / Functional Trainer Rack) Product Weight 100 lb Compatible Trainers Force USA C20, Functional Trainer Rack, Tandem Tower Not This SKU Single 50 lb upgrade; M10 dual-stack variant Warranty Coverage Home Frame Lifetime Moving Parts 10 Years Upholstery & Attachments 1 Year United States purchases, original purchaser only. Force USA does not list this stack upgrade on its commercial-grade product list — use in a commercial setting voids this home warranty. Repair or replacement is limited to the warranted part; freight is the customer's responsibility. Contact G&G Fitness Equipment if you need help confirming coverage for your installation. ⚠️ California Proposition 65 Warning: This product can expose you to chemicals including those in rubber, foam, plastic, or coated metal components, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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