Rocky Mountain ETSX-70 Full Suspension MTB Frame | 18″ Medium | 26″ – Disc Brake

Description

⭐Condition
Very nice shape overall — this early ETSX-70 looks great. Light scuffs and surface scratches consistent with use, nothing deep or through the paint. All threads are excellent. The Fox Float Racing shock holds air and functions properly, lockout works

📏Will this fit me?
Frame Size: 18″ — Medium

• Top Tube: 57cm (center-to-center) (about a 56cm effective reach)
• Seat Tube: 18″ / 45.7cm (top-to-center)
• Down Tube: 66cm (center-to-center)
• Chainstays: 43cm (center-to-center)
• Wheel Size: 26″

📦What’s Included

• Front triangle and rear swingarm — complete frameset with all hardware
• Fox Float Racing air shock with lockout — holds air, works great
• No fork included — front suspension sold separately

🚴The Ride
The ETS linkage system gives this bike an uncanny ability to pedal efficiently while staying active through rough terrain — set it to 3.5″ for XC efficiency, switch to 4.5″ for technical descents, all with a quick-release lever. The Easton oval-profile aluminum tubes are stiff laterally but forgiving vertically, and the elevated chainstay design keeps the chain quiet and the rear end tracking cleanly. This is a bike that rewards riders who push it — it doesn’t back down from rock gardens, and it climbs better than most bikes with this much travel have any right to.

🔧Workshop Wisdom
The rear suspension uses sealed cartridge bearings at all pivots — inspect and regrease these before first ride. Early ETSX frames (2002–2003) had a known pivot bearing update kit issued by Rocky Mountain; if you’re unsure whether yours has been updated, the pivot hardware is the first place to look if you hear any creaking. The Fox Float air shock is straightforward to service — rebuild kits are still available.

Before You Buy – A Note from Paul
Every frame I sell has been personally inspected and honestly described, but I want you to be 100% confident in your decision. Please take a moment to watch the detailed video included with this listing. Due to the personal nature of frame fit and the cost of shipping, I cannot accept returns. That’s why I encourage you to reach out to me directly with any questions, whether they’re about dimensions, condition, or build suggestions. I’m Paul – not a chatbot, not a sales team, just a fellow cyclist who wants to make sure this frame finds the right home. Let’s talk about this frame and make sure it’s perfect for you before you buy.

🔧What do I need to build this frame? (Please contact me if you need anything here)

• Headset: 1-1/8″ threadless, 34mm external cup (standard EC34/EC34)
• Bottom Bracket: 73mm shell, English threaded
• Seatpost: 27.2mm diameter
• Front Derailleur: Top-pull, 31.8mm clamp
• Brakes: Disc only — post-mount caliper mounts front and rear
• Stem: 1-1/8″ threadless
• Rear Spacing: 135mm (standard QR axle)
• Wheel Size: 26″
• Fork: Recommend 80–130mm travel, 1-1/8″ steerer. TALAS-style adjustable forks pair perfectly with the adjustable rear travel.

📋Other Frame Details

• Material: Easton aluminum (Rad Oval profile tubing) — front triangle; aluminum swingarm
• Rear Suspension: Rocky Mountain ETS (Energy Transfer System) — adjustable 3.5″ / 4.5″ travel via quick-release lever
• Shock: Fox Float Racing air shock with lockout (included)
• Rear Spacing: 135mm
• Built in Canada — “Built in Canada” decal present on frame
• Finish: Raw-coated silver with light grey/white highlights
• Serial #2002100237 — confirmed 2002 model year

Is This Your Bike Thing?
Twenty-plus years on, this ETSX-70 is still exactly what it was designed to be — a versatile, efficient, Canadian-built trail weapon that climbs like an XC bike and descends like something with far more travel. If you’re building a capable 26″ rig and want a frame with real heritage behind it, reach out and let’s talk.

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