Transition Sentinel Alloy (2021) Frame

(discontinued)

Discontinued

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Transition

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Specifications

Product

Transition Sentinel Alloy (2021) Frame

Intended Use

Enduro / All-Mountain

Rider

Unisex

Sizes and Geometry

XXL

View Full Geometry

Size	SM	MD	LG	XL	XXL
Top Tube Length	552mm	585mm	613mm	641mm	665mm
Head Tube Angle	63.6°	63.6°	63.6°	63.6°	63.6°
Head Tube Length	100mm	110mm	120mm	130mm	140mm
Seat Tube Angle	78.2°	77.5°	76.9°	76.4°	76.0°
Seat Tube Length	350mm	390mm	430mm	460mm	490mm
Bottom Bracket Height	346mm (29mm drop)	346mm (29mm drop)	346mm (29mm drop)	347mm (29mm drop)	347mm (29mm drop)
Chainstay Length	440mm	440mm	440mm	440mm	440mm
Wheelbase	1199mm	1233mm	1263mm	1292mm	1316mm
Standover	671mm	688mm	700mm	712mm	722mm
Reach	420mm	450mm	476mm	501mm	521mm
Stack	613mm	622mm	631mm	640mm	649mm
Additional Info	All specifications listed are with 160mm travel fork with 43mm offset. Seat tube offset at bottom bracket: 87mm. Saddle heights for effective seat tube angles listed above: 600mm (SM), 660mm (MD), 720mm (LG), 780mm (XL), 820mm (XXL).

Sizes Additional Info

All specifications listed are with 160mm travel fork with 43mm offset. Seat tube offset at bottom bracket: 87mm. Saddle heights for effective seat tube angles listed above: 600mm (SM), 660mm (MD), 720mm (LG), 780mm (XL), 820mm (XXL).

View Full Geometry

Size	SM	MD	LG	XL	XXL
Top Tube Length	552mm	585mm	613mm	641mm	665mm
Head Tube Angle	63.6°	63.6°	63.6°	63.6°	63.6°
Head Tube Length	100mm	110mm	120mm	130mm	140mm
Seat Tube Angle	78.2°	77.5°	76.9°	76.4°	76.0°
Seat Tube Length	350mm	390mm	430mm	460mm	490mm
Bottom Bracket Height	346mm (29mm drop)	346mm (29mm drop)	346mm (29mm drop)	347mm (29mm drop)	347mm (29mm drop)
Chainstay Length	440mm	440mm	440mm	440mm	440mm
Wheelbase	1199mm	1233mm	1263mm	1292mm	1316mm
Standover	671mm	688mm	700mm	712mm	722mm
Reach	420mm	450mm	476mm	501mm	521mm
Stack	613mm	622mm	631mm	640mm	649mm
Additional Info	All specifications listed are with 160mm travel fork with 43mm offset. Seat tube offset at bottom bracket: 87mm. Saddle heights for effective seat tube angles listed above: 600mm (SM), 660mm (MD), 720mm (LG), 780mm (XL), 820mm (XXL).

Wheel Size

29"

Frame Material

Aluminum

Frame Material Details

Heat-treated 6061 alloy; molded down tube, seatstay, and chainstay protection

Rear Travel

150mm

Rear Shock

FOX FLOAT X Performance Elite, 2-position lever, trunnion mount, 205mm x 62.5mm

Head Tube Diameter

Tapered, 1.125" top, 1.5" bottom

Bottom Bracket

73mm English/BSA threaded

Rear Dropout / Hub Dimensions

148x12mm Boost

Front Derailleur Size

Not compatible (1x-specific)

Seatpost Diameter

31.6mm

Max Tire Size

29" x 2.6"

ISCG Tabs

ISCG05

Bottle Cage Mounts

One inside front triangle, plus accessory mounts under top tube

Colors

Misty Green, Black Powder, Cascade Blue, Platinum Silver

Warranty

Lifetime

Weight

8 lb 15.6 oz (4,070 g)

Miscellaneous

• 2021-2024 / Version 2
• GiddyUp rear suspension design
• Internal cable routing
• Weight given for size MD with shock
• Rear travel can be reduced to 140mm with a shorter-stroke 205mm x 57.5mm shock
• Coil shock compatible
• Designed for 160mm travel forks with 42-44mm offset
• 180mm post-mount rear brake tabs; 203mm max rotor
• 32 tooth max chainring

Price

$2,199.00

More Info

transitionbikes.com

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