mercury mountainbike NIGHTTRAIN 170mm Mercury – RMU

mercury mountainbike NIGHTTRAIN 170mm Mercury – RMUThe RMU NIGHTTRAIN At RMU we wanted to match our boutique manufacturing passion with our obsession for Mountain Biking. Our intent was to produce a highly sophisticated small batch (seriously there's not alot of them!) aluminum production for core riders who are dedicated to the mountain lifestyle. So we designed the NIGHTTRAIN in partnership with Dave Weagle using his Orion Dynamics platform and dual idler layout. The NIGHTTRAIN is a full Alloy, no

The RMU NIGHTTRAIN

At RMU we wanted to match our boutique manufacturing passion with our obsession for Mountain Biking.  Our intent was to produce a highly sophisticated small batch (seriously there's not alot of them!) aluminum production for core riders who are dedicated to the mountain lifestyle.  So we designed the NIGHTTRAIN in partnership with Dave Weagle using his Orion Dynamics platform and dual idler layout.  The NIGHTTRAIN is a full Alloy, no compromise enduro bike that is made for the roughest of terrain to the biggest of jumps, while also being extremely efficient climbing uphill. The bike is designed to pedal very efficiently all while encouraging you to pump, jump and play around on the trail. The NIGHTTRAIN takes from our ski design philosophy at RMU of creating some of the most fun, playful, and versatile skis on the market and brings that to the Bike world.

The RMU NIGHTTRAIN is built for riders who want a true freeride/enduro crossover machine capable of handling everything from bike park laps to aggressive backcountry descents. Designed as a long-travel 29er freeride bike, the NIGHTTRAIN combines 170mm of travel with innovative mid-pivot suspension and Dave Weagle’s Orion suspension platform to deliver exceptional traction, control, and support at speed. Its unique dual idler drivetrain and two-chain drivetrain system help reduce pedal feedback while improving suspension performance through rough terrain. Built from durable aluminum, the NIGHTTRAIN stands apart from traditional alloy mountain bikes by blending playful freeride mountain bike characteristics with the efficiency and capability expected from a modern enduro mountain bike.

TRAVEL FRONT: 170MM
TRAVEL REAR: 170MM

The RMU NIGHTTRAIN 170mm isn’t just a mountain bike; it’s a statement of intent. As part of the ultra-limited production this "Midnight Onyx" edition represents the pinnacle of Rocky Mountain Underground’s engineering and aesthetic philosophy. The NIGHTTRAIN is designed for those who treat the descent as a canvas and the climb as a necessary ritual. The NIGHTTRAIN is a long-travel enduro machine that defies the sluggish stereotypes of its class.

Key Highlights

• Size Specific Geometry and Kinematics: We designed the NIGHTTRAIN with size specific geometry and kinematics. This ensures that whether you're on an S1 or S4, that you are getting a bike tailored for you and the way you ride.
  
  

• Elite Pedigree: A bespoke "Midnight Onyx" finish—a deep, stealth-matte aesthetic complemented by premium hardware and understated branding that whispers rather than screams.

• 170mm of Pure Confidence: With 170mm of travel, the NIGHTTRAIN is built to swallow rock gardens, huck-to-flats, and steep technical chutes while maintaining a supportive mid-stroke for popping off side hits.

• Precision Geometry: Engineered for high-speed stability without sacrificing the "flickability" RMU is known for. It features a slack head tube angle for the steeps and a steep seat tube angle to keep you centered during grueling transfers.

• Aluminum Mastery: The frame utilizes 6066-T6 aluminum frame, optimized for a perfect strength-to-weight ratio.