Rocky Mountain Thunderbolt 730

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Gloss Lemongrass/Petrol/Black / X-Large
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Agile, playful, capable. This sums up the Rocky Mountain Thunderbolt 730 perfectly. It's the bike you want when you want the low weight and acceleration of an XC bike, with the point-n-go confidence of a trail bike. It starts with a hydroformed aluminum chassis and steps it up with a relatively slack head angle, 120mm of travel on both ends, plus Rocky's Smoothlink suspension action. Uphill, it rockets past your crew, and downhill? Well, make sure you have the keys to the car, you'll be waiting for them for a while. The specs are legit: Fox shock, X-Fusion fork, XT Shadow rear derailleur, Race Face controls, and 27.5-inch wheels wrapped in Maxxis rubber.

Features & Info

Geometry chart

27.5-inch/650B wheels

FORM Aluminum Tubing

Rocky Mountain's FORM tubing pushes the limits of tube and frame design to create their unique riding feel. Every detail of the FORM frame-tube design has a purpose, from the outer shape and profile, to the wall thickness, tapers, flares and bends. This attention to detail, paired with premium materials and manufacturing processes, allows Rocky Mountain to push the boundaries of bicycle design.

SmoothLink Suspension

Rocky Mountain's Smoothlink suspension places the rear chainstay pivot above the rear axle, keeping the chain torque line parallel to the linkage. The benefit? The rear suspension is always active, bob-free, and delivers a wonderful bottomless feel, no matter what gear you're in.  

Pedals sold separately


FORM 7005 Series Custom Formed Alloy. BC2 Pivots & Grease Ports. Pipelock Main Pivot. Press Fit BB. RIDE-9 Adjustable Geometry & Suspension Rate
X Fusion Streat RL2 27.5 Air. 120mm. Lockout / Rebound / Tapered Alloy Steerer
Rear Shock
Fox Float DPS Custom Valved. SmoothLink Design 120mm. Rebound / Firm - Medium - Open Settings
Wheeltech Helix TR25 Tubeless Compatible by SUNringlé
Front: Shimano Deore / Centerlock / 32H / 15mm Axle; Rear: Shimano Deore / Centerlock / 32H / 12 x 142mm Axle
WTB 2.0 Stainless
Maxxis, Front: Ardent, 27.5 x 2.25; Rear: Ardent Race 27.5 x 2.2
Shimano M615 170-175mm 2x10spd
Front Derailleur
Shimano Deore E Mount 2x10spd
Rear Derailleur
Shimano XT Shadow Plus Direct Mount 10spd
Rear Cogs
Shimano HG50 11-36T 10spd
Shimano Deore Rapid Fire I-Spec 2x10spd
Rocky Mountain Five15 XC 31.8mm x 760mm x 5° Sweep
Rocky Mountain XC Kraton
RMB 7° x 70-90mm
Brake Levers
Shimano M506 I-Spec Shifter Mount
Shimano M506 Hydraulic Disc 180/160mm
WTB Volt
Seat Post
Rocky Mountain SL 30.9mm x 400mm