FM-6 Twin Functional Trainer - Add-On

The Rogue FM-6 Twin Functional Trainer - Add-On is an attachment kit, not a standalone machine — it bolts a dual-stack, 2:1 functional trainer and 1:1 lat pulldown/low row onto an RM-6 Monster Rack 2.0 the customer already owns (or buys separately), nesting the two weight stacks into the side of the rack instead of behind it so the whole system extends only 3.5” past the rack’s back uprights. This is a different catalog product from the complete FM-6 Twin Functional Trainer bundle, which ships with the full RM-6 rack included — buying the Add-On only makes sense if you’re already committed to (or currently own) a compatible RM-6, since the rack itself must be bolted to the floor before the trainer is usable. It’s Rogue’s closest analog to its own INDY Functional Trainer Add-On, another attachment-only kit built for a different rack platform.

As configured, pricing starts around $3,885 for the base 80”-tall, 24”-deep, 250lb-stack build with no shrouds, and climbs to roughly $4,535+ at 100” tall, 43” deep, with 300lb stacks and shrouds added. The construction matches the full-bundle trainer hardware: 3x3” 11-gauge steel integration, 1/4” steel pulley plates, 3/16” US-made mil-spec aircraft cable, and a lifetime warranty on the frame/welds with 5 years on pulleys, cables, and guide rods. Independent coverage of this specific Add-On configuration is thin — no dedicated written review turned up in this research — so most of what’s known beyond the manufacturer spec sheet comes from a single GymRadar owner review and a third-party installer’s real-world install footage.

Both of those independent sources point to the same theme: the unit itself works as advertised, but the retrofit install is a real project. A third-party installer (SoCal Fitness Solutions) clocked roughly 45 minutes of unboxing plus about 2 hours 20 minutes of install time for the stack portion alone, noting their process differs from Rogue’s own install video because “you don’t have the space in a home setting to build the both sides” at once. The one GymRadar owner backs that up, describing an install that required adding two extra posts to their existing rack while working with “literally inches to spare” between walls, pillars, and HVAC ducts — tougher than average, though they call the finished result “everything you could possibly need” functionally. That same owner’s one real complaint is value: after a price increase, “the cost is a bit harder to justify when the quality of the competing products is so similar,” naming the kind of comparison this whole product family draws to REP’s Ares 2.0 Functional Trainer. Net: a solid option for an existing RM-6 owner who wants dual-stack cable capability without re-buying the rack, but budget real installation time and clearance, and cross-shop the Ares 2.0 or the complete FM-6 Twin bundle if you’re not already locked into the RM-6 platform.

Buying guide

Best Power Rack for Your Home Gym — July 2026

Cable	3/16" US-made mil-spec aircraft cable; stainless steel clevises machined in USA
Steel	1/4" steel pulley plates; integrates with the RM-6's existing 3x3" 11-gauge rack tubing
Made in	designed, manufactured, and assembled in Rogue's Columbus, OH facility with US steel; pulleys imported
Assembly	ships freight in 4-6 weeks; a third-party installer clocked ~45 min unboxing + ~2h20min install for the stack portion alone, and Rogue notes the RM-6 rack must be bolted to the floor before use — one owner reported needing to add two extra rack posts and working with very tight wall/HVAC clearance
Warranty	frame and welds warrantied for life; pulleys, cables, and guide rods carry a 5-year warranty (Rogue manufacturer FAQ)
Footprint	extends only ~3.5" behind the main rack structure; overall width 58.7" without plate storage or 75 5/8" with it, length 63"-82" depending on depth option
Cable travel	at 80" height: 74.7" (250lb stack) or 65" (300lb stack); travel increases proportionally at the 90"/100" height options
Configuration	attachment-only add-on kit — dual independent 2:1 functional-trainer weight stacks combining to a shared 1:1 lat pulldown/low row point (up to 300lb combined); bolts onto an existing/separately-purchased RM-6 Monster Rack 2.0, does NOT include the rack itself — distinct from the complete FM-6 Twin Functional Trainer bundle, which ships with the rack included
Depth options	24", 30", or 43" (must match the RM-6 rack's depth)
Weight stacks	dual 250lb or 300lb stacks (one per side); 2:1 ratio on the two functional-trainer trolleys, 1:1 on the shared lat pulldown/low row via a single-cable takeoff (no Y-attachment needed)
Height options	80", 90", or 100" (must match the RM-6 rack's height)
Review widget note	the on-page "4.6 stars, 183 reviews" widget is identical across this Add-On page, the full FM-6 Twin bundle's page, and other sibling FM/INDY products — a pooled family-wide widget, not an Add-On-specific review count
Price configurability	highly configurable — height, depth, per-stack resistance (250lb/300lb), and optional shrouds all move the price; ~$3,885 base (80"/24"/250lb/no shrouds) up to ~$4,535+ for larger/heavier configurations with shrouds

What is a Rack?

What a squat/folding rack is

Racks in this category trade the full four-post cage for a smaller footprint — wall-mounted fold-back racks and half-racks that squat and press without swallowing a room. A fold-back rack hinges flat against the wall between sessions, making it the go-to for shared garages. Prioritize 3x3 or Monster Lite uprights and 11-gauge steel so “space-saving” doesn’t mean “wobbly,” and confirm your wall studs can anchor it.

How it compares

	FM-6 Twin Functional Trainer - Add-On	FM-6 Twin Functional Trainer	INDY Functional Trainer Add-On	Ares™ 2.0 Functional Trainer
GymRadar rating				4.81/5
Price	$3,885.00	$6,195.00	$2,995.00	$2,999.99
Cable	3/16" US-made mil-spec aircraft cable; stainless steel clevises machined in USA	3/16" US-made mil-spec aircraft cable	3/16" US-made mil-spec aircraft cable
Steel	1/4" steel pulley plates; integrates with the RM-6's existing 3x3" 11-gauge rack tubing
Made in	designed, manufactured, and assembled in Rogue's Columbus, OH facility with US steel; pulleys imported	USA steel; pulleys imported	designed and manufactured in the USA; pulleys imported
Assembly	ships freight in 4-6 weeks; a third-party installer clocked ~45 min unboxing + ~2h20min install for the stack portion alone, and Rogue notes the RM-6 rack must be bolted to the floor before use — one owner reported needing to add two extra rack posts and working with very tight wall/HVAC clearance	ships freight in 4-6 weeks; manufacturer estimates ~10-12 hours with two people, owners confirm needing a second person for specific steps (top crossmember, sliding weight stacks into place, mounting the top banner)	manufacturer ships the base configuration in 4-6 weeks; owners of heavily customized dual builds report 8-12 week lead times and roughly two full days of two-person assembly; rack must be bolted to the floor before use
Warranty	frame and welds warrantied for life; pulleys, cables, and guide rods carry a 5-year warranty (Rogue manufacturer FAQ)	not stated in gathered sources for this specific SKU; Rogue's other Monster-platform racks (e.g. the Rhino Trainer line) carry a lifetime frame/weld warranty with 5-year coverage on pulleys/cables — likely comparable here but not independently confirmed	lifetime warranty on frame and welds; 5-year warranty on pulleys, cables, and guide rods (Rogue)	Lifetime
Footprint	extends only ~3.5" behind the main rack structure; overall width 58.7" without plate storage or 75 5/8" with it, length 63"-82" depending on depth option	weight stacks add only ~3.5" behind the main rack structure; one reviewer's 43"-depth build measured a ~49"x49" cage footprint (~76"x80" overall)	no added floor footprint beyond the host rack; manufacturer spec: 63"-82" L x 58.7" W (75 5/8" W with plate storage), adds roughly 1" of rack height; overall rack width runs 49", about 2" wider than Rep/Sorinex/Hammer Strength equivalents (Iron and Lime Fitness, owner-measured)
Cable travel	at 80" height: 74.7" (250lb stack) or 65" (300lb stack); travel increases proportionally at the 90"/100" height options			71.3"-94.9", varies with upright height
Configuration	attachment-only add-on kit — dual independent 2:1 functional-trainer weight stacks combining to a shared 1:1 lat pulldown/low row point (up to 300lb combined); bolts onto an existing/separately-purchased RM-6 Monster Rack 2.0, does NOT include the rack itself — distinct from the complete FM-6 Twin Functional Trainer bundle, which ships with the rack included	full Monster Rack 2.0 power rack + dual independent 2:1 functional-trainer weight stacks combining to a shared 1:1 lat pulldown/low row point (up to 300lb combined) — distinct from the single-stack FM-6 Functional Trainer and from the FM-HR Twin Functional Trainer (a different depth/height tier under a near-identical name)	Dual (both sides), Left only, or Right only — priced per side purchased
Depth options	24", 30", or 43" (must match the RM-6 rack's depth)	24", 30", or 43"	24", 30", or 43"
Weight stacks	dual 250lb or 300lb stacks (one per side); 2:1 ratio on the two functional-trainer trolleys, 1:1 on the shared lat pulldown/low row via a single-cable takeoff (no Y-attachment needed)	dual 250lb or 300lb stacks (one per side); 2:1 ratio on the two functional-trainer trolleys, 1:1 on the shared lat pulldown/low row via a single-cable takeoff (no Y-attachment needed)		Dual 260 lb selectorized stacks standard, upgradeable to 310 lb each
Height options	80", 90", or 100" (must match the RM-6 rack's height)	80", 90", or 100"	80", 90", or 100" rack (80" only available in satin or textured black finish per owner reports)
Review widget note	the on-page "4.6 stars, 183 reviews" widget is identical across this Add-On page, the full FM-6 Twin bundle's page, and other sibling FM/INDY products — a pooled family-wide widget, not an Add-On-specific review count		manufacturer page shows 4.6/5, 183 reviews — POOLED across Rogue's whole rack-cable-system family (FM-6, Twin Stack, Rhino Trainer, standalone INDY, etc.); spot-checking the visible reviews shows none attributed to this exact Add-On SKU. Independent GymRadar signal is much thinner: 4.67/5 from a single review.
Price configurability	highly configurable — height, depth, per-stack resistance (250lb/300lb), and optional shrouds all move the price; ~$3,885 base (80"/24"/250lb/no shrouds) up to ~$4,535+ for larger/heavier configurations with shrouds	highly configurable — height, depth, color, per-stack resistance (250lb/300lb), and shrouds/attachments all move the price; ~$5,700 base, $6,195 as the manufacturer page's default online configuration, $6,520 as one reviewer built it	$2,995 as landed (Dual sides, 80", 24" depth, 4-post, 250lb stacks, no shrouds) confirmed live via the manufacturer's own configurator — clicked through Dual/Left/Right options and observed the price change; dropping to $1,660 for one side only; owner-reported heavily upgraded builds (6-post, 300lb, shrouds, stainless) run $5,000-$10,500+

Reviews by source

Expert	4.33/5	1 reviews
Retailer	4.6/5	181 reviews

The FM-6 Twin Functional Trainer - Add-On bolts Rogue’s dual-stack, 2:1 functional trainer and 1:1 lat pulldown/low row onto an RM-6 Monster Rack the customer already owns — a genuinely different purchase from the complete rack+trainer bundle sold under a near-identical name. Build quality is the standout on paper: 3x3” 11-gauge steel integration, 1/4” steel pulley plates, US-made mil-spec cable, and a lifetime frame/weld warranty with 5 years on pulleys and cables. Independent evidence is thin — no dedicated written review of this Add-On configuration was found — but the two sources that do exist agree the install is a real project: a third-party installer logged roughly 2 hours 20 minutes for the stack alone, and the one GymRadar owner needed to add extra rack posts and work with “literally inches to spare” around walls and HVAC ducts. That same owner otherwise has “no complaints at all” functionally, but flags value as the weak point after a price increase, echoing the same REP Ares 2.0 comparison that recurs across this entire Rogue product family’s research. A solid retrofit for an existing RM-6 owner who wants dual-stack cable capacity without buying a second rack, but budget real install time, and treat the thin independent sample as a reason for caution rather than confidence.

+Functionality: dual independent 250lb/300lb weight stacks combine to a genuine 1:1, single-cable 300lb lat pulldown/low row without a Y-attachment — "everything you could possibly need and works perfectly" (GymRadar owner review, Big Adam NC)
+Build quality: 3x3" 11-gauge steel integration, 1/4" steel pulley plates, and 3/16" US-made mil-spec aircraft cable, backed by a lifetime frame/weld warranty plus 5-year coverage on pulleys, cables, and guide rods (Rogue manufacturer spec sheet)
+Versatility: adds a full functional trainer, lat pulldown, and low row onto an existing power rack while preserving full squat-rack use, extending only ~3.5" behind the rack (Rogue manufacturer spec sheet)
+Value: buying just the Add-On (from ~$3,885) is meaningfully cheaper than the complete FM-6 Twin Functional Trainer bundle (~$6,195) for anyone who already owns a compatible RM-6 Monster Rack (Rogue manufacturer pricing)

−Value: the sole independent owner review scores Value at just 3.00/5, writing that after a price increase "the cost is a bit harder to justify when the quality of the competing products is so similar" (GymRadar owner review)
−Versatility/Assembly: real-world installs run long and tight on clearance — a third-party installer's stack-only install took roughly 2 hours 20 minutes after a 45-minute unboxing, and one owner needed to add two extra rack posts while working with "literally inches to spare" near walls and HVAC ducts (SoCal Fitness Solutions install video; GymRadar owner review)
−Durability: independent long-term evidence is thin — a single owner review and no editorial coverage specific to this Add-On configuration exists yet, so wear beyond the manufacturer's own warranty claims is unconfirmed
−Functionality: no dedicated hands-on editorial review of the Add-On configuration was found — other outlets cover the single-stack FM-6 and the full Twin bundle, not this attachment-only SKU, so functionality claims lean heavily on the manufacturer spec sheet plus one owner

$3,885.00

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