ThunderBolt Alloy 30

Fast as lightning!

Quick and nimble, the Thunderbolt is total livewire. Whether it’s powering up technical climbs or popping off every trail feature in sight, its 27.5” wheels and 140mm of rear travel makes this bike ready and capable for when you’re feeling creative with line choice. The frame is available in both carbon and alloy, and our RIDE-9 adjustment system gives you the power to further adjust geometry and ride characteristics to your liking.

Product Rocky Mountain Thunderbolt Alloy 30 Bike
Model Year 2020
Riding Type Trail
Rider Unisex
Sizes and Geometry
Small only
Wheel Size 27.5" (650b)
Frame Material Aluminum
Frame Material Details FORM alloy with chainstay and down tube protectors
Rear Travel 140mm
Rear Shock RockShox Deluxe Select+ RT
Fork RockShox Sektor RL, 37mm offset
Fork Travel 140mm
Head Tube Diameter Tapered
Headset FSA Orbit No. 57E
Handlebar Rocky Mountain AM, 760mm
Stem Rocky Mountain 35 AM
Grips Rocky Mountain Lock On Light
Brakes Shimano MT400 2-piston with Shimano RT54 180mm rotors
Brake Levers Shimano MT400
Drivetrain 1x
Shifters SRAM SX Eagle, 12-speed
Front Derailleur None
Rear Derailleur SRAM SX Eagle, 12-speed
ISCG Tabs ISCG 05, 2-bolt
Chainguide Rocky Mountain Spirit Guide, integrated
Cranks SRAM SX Eagle
Chainrings 34 tooth
Bottom Bracket SRAM BB92 DUB PressFit
Pedals None
Chain SRAM SX Eagle, 12-speed
Cassette SRAM PG-1210, 11-50 tooth, 12-speed
Rims WTB ST i30 TCS 2.0 Tubeless
Hubs Shimano MT400 Boost
Spokes Stainless 2.0mm
Tires Front: Maxxis Minion DHR II WT EXO TR 27.5" x 2.4"
Rear: Maxxis Minion DHR II WT EXO TR 27.5" x 2.4"
Saddle WTB Volt Race 142
Seatpost Rocky Mountain Toonie Drop
Seatpost Diameter 30.9mm
Seatpost Clamp Standard single bolt
Rear Dropout / Hub Dimensions 12mm x 148mm
Max. Tire Size 27.5" x 2.5" or 26" x 2.8"
Bottle Cage Mounts Yes
Colors Yellow and black
Warranty 5 years limited
Weight 31 lb 4.9 oz (14,200 g)
Miscellaneous Smoothlink suspension design
RIDE-9 adjustable geometry and suspension rate
Full sealed cartridge bearings
Size specific suspension tune
Internal cable routing
Can use 26+ wheels

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