2018 Rocky Mountain Thunderbolt Alloy 50 Bike

(discontinued)

Discontinued

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Where To Buy
	Free shipping on orders over $50 (continental U.S. only). International shipping available. Some exclusions apply.	Browse available Bikes
	Free shipping on orders over $50 (continental U.S. only). International shipping available. Some exclusions apply.	Browse available Bikes

Specifications

Product

Rocky Mountain Thunderbolt Alloy 50 Bike

Model Year

2018

Riding Type

Trail

Rider

Unisex

Sizes and Geometry

XS (Slack, Neutral, Steep)

S (Slack, Neutral, Steep)

M (Slack, Neutral, Steep)

L (Slack, Neutral, Steep)

XL (Slack, Neutral, Steep)

Size	XS (Slack, Neutral, Steep)	S (Slack, Neutral, Steep)	M (Slack, Neutral, Steep)	L (Slack, Neutral, Steep)	XL (Slack, Neutral, Steep)
Top Tube Length	544mm, 542mm, 539mm	569mm, 567mm, 564mm	594mm, 592mm, 589mm	619mm, 617mm, 614mm	649mm, 647mm, 644mm
Head Tube Angle	Slack: 66.6°, Neutral: 67.5°, Steep: 68.3°	Slack: 66.6°, Neutral: 67.5°, Steep: 68.3°	Slack: 66.6°, Neutral: 67.5°, Steep: 68.3°	Slack: 66.6°, Neutral: 67.5°, Steep: 68.3°	Slack: 66.6°, Neutral: 67.5°, Steep: 68.3°
Head Tube Length	100mm	110mm	120mm	130mm	145mm
Seat Tube Angle	73.1°, 74.0°, 74.8°	73.1°, 74.0°, 74.8°	73.1°, 74.0°, 74.8°	73.1°, 74.0°, 74.8°	73.1°, 74.0°, 74.8°
Seat Tube Length	381mm	419mm	457mm	483mm	521mm
Bottom Bracket Height	21mm, 11mm, 1mm drop	21mm, 11mm, 1mm drop	21mm, 11mm, 1mm drop	21mm, 11mm, 1mm drop	21mm, 11mm, 1mm drop
Chainstay Length	423mm, 421mm, 419mm	423mm, 421mm, 419mm	423mm, 421mm, 419mm	423mm, 421mm, 419mm	423mm, 421mm, 419mm
Wheelbase	1,079mm, 1,078mm, 1,076mm	1,105mm, 1,104mm, 1,102mm	1,132mm, 1,130mm, 1,128mm	1,158mm, 1,156mm, 1,154mm	1,189mm, 1,188mm, 1,186mm
Standover	796mm, 800mm, 804mm	796mm, 800mm, 804mm	796mm, 800mm, 804mm	796mm, 800mm, 804mm	796mm, 800mm, 804mm
Reach	370mm, 378mm, 387mm	392mm, 401mm, 409mm	414.8mm, 423mm, 432mm	437mm, 446mm, 454mm	464mm, 472mm, 480mm
Stack	572mm, 567mm, 561mm	582mm, 576mm, 570mm	591mm, 585mm, 579mm	601mm, 595mm, 588mm	615mm, 609mm, 602mm

Wheel Size

27.5" (650b)

Frame Material

Aluminum

Frame Material Details

FORM™ alloy, BC2™ / ABC™ pivots, full sealed cartridge bearing main pivot, internal cable routing

Rear Travel

120mm

Rear Shock

FOX Float DPS EVOL Performance

Fork

FOX 34 Float Performance

Fork Travel

130mm

Head Tube Diameter

Tapered

Headset

FSA Orbit No.57E

Handlebar

Rocky Mountain AM, 760mm width

Stem

Rocky Mountain AM

Grips

Rocky Mountain Lock-on Light

Brakes

SRAM Level T with 180mm rotors

Brake Levers

SRAM Level T

Drivetrain

Shifters

SRAM GX

Front Derailleur

N/A

Rear Derailleur

SRAM GX

ISCG Tabs

Chainguide

N/A

Cranks

Race Face Aeffect Cinch

Chainrings

32 tooth, steel

Bottom Bracket

Race Face BB92, press fit

Pedals

None included

Chain

SRAM PC-1110

Cassette

SRAM PG-1130, 11-42 tooth, 11-speed

Rims

Sun Helix TR25 SL, tubeless compatible, tape / valves / sealant not included

Hubs

Front: Rocky Mountain Sealed Boost, 15mm x 110mm
Rear: SRAM MTH 746, 12mm x 142mm

Spokes

WTB 2.0-1.8

Tires

Front: Maxxis Minion DHR II 27.5" x 2.3", folding
Rear: Maxxis Crossmark II, 27.5" x 2.25"

Saddle

WTB Volt Race

Seatpost

Race Face Aeffect Dropper

Seatpost Diameter

30.9mm

Seatpost Clamp

Standard

Rear Dropout / Hub Dimensions

12mm x 142mm

Max. Tire Size

Bottle Cage Mounts

Yes

Colors

Red/black
Olive green/blue

Warranty

5 year limited

Weight

N/A

Miscellaneous

BC2™ / ABC™ pivots
Full sealed cartridge bearing main pivot
RIDE-9™ adjustable geometry and suspension rate
Internal cable routing

Price

$3,199.00

More Info

Rocky Mountain website

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Where To Buy
	Free shipping on orders over $50 (continental U.S. only). International shipping available. Some exclusions apply.	Browse available Bikes
	Free shipping on orders over $50 (continental U.S. only). International shipping available. Some exclusions apply.	Browse available Bikes