Transition Spire Alloy Frame

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c70 2021 Transition Spire Alloy Factory Orange

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s1600 2021 Transition Spire Alloy Factory Orange

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Transition

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

Specifications

Product

Transition Spire Alloy Frame

Intended Use

Enduro / All-Mountain

Freeride / Bike Park

Rider

Unisex

Sizes and Geometry

XXL

View Full Geometry

Size	S	M	L	XL	XXL
Top Tube Length	547, 550	577, 580	605, 608	633, 636	661, 664
Head Tube Angle	63.0°, 62.5°	63.0°, 62.5°	63.0°, 62.5°	63.0°, 62.5°	63.0°, 62.5°
Head Tube Length	100	100	110	120	130
Seat Tube Angle	79.6°, 79.1°	78.8°, 78.3°	78.1°, 77.6°	77.5°, 77.0°°	77.2°, 76.7°
Seat Tube Length	360	390	430	460	490
Bottom Bracket Height	350, 343	350, 343	350, 343	350, 343	350, 343
Chainstay Length	446, 448	446, 448	446, 448	452, 454	452, 454
Wheelbase	1227, 1229	1257, 1259	1287, 1289	1322, 1324	1352, 1354
Standover	685	700	715	730	745
Reach	430, 425	460, 455	485, 480	510, 505	535, 530
Stack	619, 624	619, 624	628, 633	637, 642	646, 651
Additional Info	Multiple values for 'High' and 'Low' adjustable geometry positions via a lower shock mount flip-chip Measurements are in mm unless otherwise noted Additional geometry included in photos above

Sizes Additional Info

Multiple values for 'High' and 'Low' adjustable geometry positions via a lower shock mount flip-chip
Measurements are in mm unless otherwise noted
Additional geometry included in photos above

View Full Geometry

Size	S	M	L	XL	XXL
Top Tube Length	547, 550	577, 580	605, 608	633, 636	661, 664
Head Tube Angle	63.0°, 62.5°	63.0°, 62.5°	63.0°, 62.5°	63.0°, 62.5°	63.0°, 62.5°
Head Tube Length	100	100	110	120	130
Seat Tube Angle	79.6°, 79.1°	78.8°, 78.3°	78.1°, 77.6°	77.5°, 77.0°°	77.2°, 76.7°
Seat Tube Length	360	390	430	460	490
Bottom Bracket Height	350, 343	350, 343	350, 343	350, 343	350, 343
Chainstay Length	446, 448	446, 448	446, 448	452, 454	452, 454
Wheelbase	1227, 1229	1257, 1259	1287, 1289	1322, 1324	1352, 1354
Standover	685	700	715	730	745
Reach	430, 425	460, 455	485, 480	510, 505	535, 530
Stack	619, 624	619, 624	628, 633	637, 642	646, 651
Additional Info	Multiple values for 'High' and 'Low' adjustable geometry positions via a lower shock mount flip-chip Measurements are in mm unless otherwise noted Additional geometry included in photos above

Wheel Size

29"

Frame Material

Aluminum

Frame Material Details

Full 6061 aluminum (front triangle, rear triangle, and rocker)

Rear Travel

170mm

Rear Shock

205mm length x 65mm stroke
2021-2025: FOX FLOAT X2 Factory
2026: RockShox Vivid Ultimate

Head Tube Diameter

Straight with FSA. No.55R/57 headset, 56mm/56mm press-in cups

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"x2.6"

ISCG Tabs

ISCG05

Bottle Cage Mounts

One inside front triangle, plus accessory mounts under top tube

Colors

2021-2022: Raw, Factory Orange
2023-2025: Fade To Black, Hint Of Blue
2026: Galactic Black, Ultra Violet

Warranty

Lifetime

Weight

10 lb 9.7 oz (4,810 g)

Miscellaneous

2021-2026 model year

Geo adjust chip at the lower shock mount for high and low geometry settings

56mm/56mm press in headset cups are compatible with reach adjust headsets when used with a dual crown fork

Molded rubber frame protection on the downtube, chainstay, and seatstay

Internal dropper and rear derailleur cable routing in downtube and chainstay, external rear brake cable routing

GiddyUp suspension layout is tuned to work with both air and coil rear shocks

Enduro Max sealed bearings with bearing shields on main pivot

Stock 170mm rear travel with a 65mm stroke shock, optional 160mm rear travel with a 60mm stroke shock

27%-33% suggested sag range

SBG geometry and size-specific chainstays

SRAM UDH derailleur hanger

Accessory mount on underside of top tube

Weight given for size MD with shock

Price

$2,599.00

More Info

Transition's Biggest Bike Yet - Meet the New Spire

TransitionBikes.com

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