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Transition Sentinel Alloy Eagle 90
The Sentinel rides the lines between planted bottomless sender and playful, poppy trail pony. This leaves it right in the sweet spot, as we like to call it. It's versatile attitude helps riders excel and push their limits, making it the one bike most will need. Its intuitive nature is easy to get acquainted with; you'll find yourself sending lines, jumps, and maneuvers you always felt were beyond your ability. Where before you went around, now you go over. Where you pushed up, now you pedal. Where you rolled, now you boost. It's time to Send-It-All.
Product
Transition Sentinel Alloy Eagle 90 Bike
Model Year
2025
Intended Use
Enduro / All-Mountain
Rider
Unisex
Sizes and Geometry
XS 27.5"
SM (29", MX)
MD (29", MX)
LG (29", MX)
XL (29", MX)
XXL (29", MX)
View Full Geometry
Wheel Size
27.5" (650b)
29"
Frame Material
Aluminum
Frame Material Details
Molded chainstay, seatstay, and lower down tube protection
Rear Travel
150mm
Rear Shock
RockShox Super Deluxe Select+, 205mm length x 60mm stroke
Fork
RockShox Lyrik Select+, 35mm stanchions
Fork Travel
160mm
Head Tube Diameter
Tapered, 1.125" top, 1.5" bottom
Headset
FSA No.57E, ZS44 upper, ZS56 lower
Stem
ANVL Swage, 40mm length, 35mm bar clamp
Grips
ODI Elite Flow, lock-on
Brakes
SRAM Maven Bronze, 4-piston
Rotors: SRAM CenterLine, 200mm
Rotors: SRAM CenterLine, 200mm
Brake Levers
SRAM Maven Bronze Stealth, tool-free reach adjust
Drivetrain
1x
Shifters
SRAM Eagle 90 Transmission, 12-speed, MMX mounting bracket
Front Derailleur
None
Rear Derailleur
SRAM Eagle 90 Transmission, 12-speed
ISCG Tabs
ISCG05
Chainguide
None
Cranks
SRAM Eagle 90 Transmission Alloy DUB, 165mm length
Chainrings
SRAM Eagle 90 Transmission, 30 tooth
Bottom Bracket
SRAM DUB, 73mm English/BSA threaded
Pedals
None
Chain
SRAM GX Eagle Transmission Flattop, 12-speed
Cassette
SRAM GX Eagle Transmission XS-1275, 12-speed, 10-52 tooth
Rims
DT Swiss M 1900 Spline 30 Alloy, 30mm inner width
Hubs
DT Swiss 370, 15mm x 110mm (Boost) front, 12mm x 148mm (Boost) rear with Ratchet LN freehub and XD driver
Spokes
DT Swiss Champion
Tires
Front: Maxxis Assegai, 3C MaxxTerra compound, EXO+ casing, 2.5"
Rear: Maxxis Minion DHR II, 3C MaxxTerra compound, EXO+ casing, 2.4"
Rear: Maxxis Minion DHR II, 3C MaxxTerra compound, EXO+ casing, 2.4"
Saddle
SDG Bel-Air V3
Seatpost
OneUp dropper
Drop: 120mm (XS), 150mm (SM), 190mm (MD), 210mm (LG), 240mm (XL/XXL)
Drop: 120mm (XS), 150mm (SM), 190mm (MD), 210mm (LG), 240mm (XL/XXL)
Seatpost Diameter
31.6mm
Seatpost Clamp
Single bolt, 34.9mm
Rear Dropout / Hub Dimensions
12mm x 148mm (Boost)
Max. Tire Size
2.5"
Bottle Cage Mounts
One inside front triangle, plus accessory mounts under top tube
Colors
Deep Purple, Graphite Grey, Glacier White
Warranty
Lifetime frame
Weight
Â
Miscellaneous
• V3 version
• GiddyUp four-bar Horst-link rear suspension design
• XS has 27.5" wheels; SM-XXL have 29" wheels front/rear with option of mixed ("Mullet") wheels (29" front, 27.5" rear) via two-position flip chip at lower shock mount
• Rear travel can be increased to 160mm with longer-stroke (65mm) shock
• Internal cable routing; cable ports on the side of the headtube allow for customizable options for mechanical or wireless shifting as well as left or right rear brake setups
• SRAM UDH (Universal Derailleur Hanger)
• Frame weight, size MD with shock: 9.91 lbs (4.5 kg)
Includes:
• Pre-installed integrated mud guard to protect the main pivot area
• Tubeless valves and sealant
• Fidlock Twist Bike Base bottle mount
• GiddyUp four-bar Horst-link rear suspension design
• XS has 27.5" wheels; SM-XXL have 29" wheels front/rear with option of mixed ("Mullet") wheels (29" front, 27.5" rear) via two-position flip chip at lower shock mount
• Rear travel can be increased to 160mm with longer-stroke (65mm) shock
• Internal cable routing; cable ports on the side of the headtube allow for customizable options for mechanical or wireless shifting as well as left or right rear brake setups
• SRAM UDH (Universal Derailleur Hanger)
• Frame weight, size MD with shock: 9.91 lbs (4.5 kg)
Includes:
• Pre-installed integrated mud guard to protect the main pivot area
• Tubeless valves and sealant
• Fidlock Twist Bike Base bottle mount
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Transition Sentinel Alloy Eagle 90
Transition Sentinel Alloy Eagle 90
The Sentinel rides the lines between planted bottomless sender and playful, poppy trail pony. This leaves it right in the sweet spot, as we like to call it. It's versatile attitude helps riders excel and push their limits, making it the one bike most will need. Its intuitive nature is easy to get acquainted with; you'll find yourself sending lines, jumps, and maneuvers you always felt were beyond your ability. Where before you went around, now you go over. Where you pushed up, now you pedal. Where you rolled, now you boost. It's time to Send-It-All.
Product
Transition Sentinel Alloy Eagle 90 Bike
Model Year
2025
Intended Use
Enduro / All-Mountain
Rider
Unisex
Sizes and Geometry
XS 27.5"
SM (29", MX)
MD (29", MX)
LG (29", MX)
XL (29", MX)
XXL (29", MX)
View Full Geometry
Wheel Size
27.5" (650b)
29"
Frame Material
Aluminum
Frame Material Details
Molded chainstay, seatstay, and lower down tube protection
Rear Travel
150mm
Rear Shock
RockShox Super Deluxe Select+, 205mm length x 60mm stroke
Fork
RockShox Lyrik Select+, 35mm stanchions
Fork Travel
160mm
Head Tube Diameter
Tapered, 1.125" top, 1.5" bottom
Headset
FSA No.57E, ZS44 upper, ZS56 lower
Stem
ANVL Swage, 40mm length, 35mm bar clamp
Grips
ODI Elite Flow, lock-on
Brakes
SRAM Maven Bronze, 4-piston
Rotors: SRAM CenterLine, 200mm
Rotors: SRAM CenterLine, 200mm
Brake Levers
SRAM Maven Bronze Stealth, tool-free reach adjust
Drivetrain
1x
Shifters
SRAM Eagle 90 Transmission, 12-speed, MMX mounting bracket
Front Derailleur
None
Rear Derailleur
SRAM Eagle 90 Transmission, 12-speed
ISCG Tabs
ISCG05
Chainguide
None
Cranks
SRAM Eagle 90 Transmission Alloy DUB, 165mm length
Chainrings
SRAM Eagle 90 Transmission, 30 tooth
Bottom Bracket
SRAM DUB, 73mm English/BSA threaded
Pedals
None
Chain
SRAM GX Eagle Transmission Flattop, 12-speed
Cassette
SRAM GX Eagle Transmission XS-1275, 12-speed, 10-52 tooth
Rims
DT Swiss M 1900 Spline 30 Alloy, 30mm inner width
Hubs
DT Swiss 370, 15mm x 110mm (Boost) front, 12mm x 148mm (Boost) rear with Ratchet LN freehub and XD driver
Spokes
DT Swiss Champion
Tires
Front: Maxxis Assegai, 3C MaxxTerra compound, EXO+ casing, 2.5"
Rear: Maxxis Minion DHR II, 3C MaxxTerra compound, EXO+ casing, 2.4"
Rear: Maxxis Minion DHR II, 3C MaxxTerra compound, EXO+ casing, 2.4"
Saddle
SDG Bel-Air V3
Seatpost
OneUp dropper
Drop: 120mm (XS), 150mm (SM), 190mm (MD), 210mm (LG), 240mm (XL/XXL)
Drop: 120mm (XS), 150mm (SM), 190mm (MD), 210mm (LG), 240mm (XL/XXL)
Seatpost Diameter
31.6mm
Seatpost Clamp
Single bolt, 34.9mm
Rear Dropout / Hub Dimensions
12mm x 148mm (Boost)
Max. Tire Size
2.5"
Bottle Cage Mounts
One inside front triangle, plus accessory mounts under top tube
Colors
Deep Purple, Graphite Grey, Glacier White
Warranty
Lifetime frame
Weight
Â
Miscellaneous
• V3 version
• GiddyUp four-bar Horst-link rear suspension design
• XS has 27.5" wheels; SM-XXL have 29" wheels front/rear with option of mixed ("Mullet") wheels (29" front, 27.5" rear) via two-position flip chip at lower shock mount
• Rear travel can be increased to 160mm with longer-stroke (65mm) shock
• Internal cable routing; cable ports on the side of the headtube allow for customizable options for mechanical or wireless shifting as well as left or right rear brake setups
• SRAM UDH (Universal Derailleur Hanger)
• Frame weight, size MD with shock: 9.91 lbs (4.5 kg)
Includes:
• Pre-installed integrated mud guard to protect the main pivot area
• Tubeless valves and sealant
• Fidlock Twist Bike Base bottle mount
• GiddyUp four-bar Horst-link rear suspension design
• XS has 27.5" wheels; SM-XXL have 29" wheels front/rear with option of mixed ("Mullet") wheels (29" front, 27.5" rear) via two-position flip chip at lower shock mount
• Rear travel can be increased to 160mm with longer-stroke (65mm) shock
• Internal cable routing; cable ports on the side of the headtube allow for customizable options for mechanical or wireless shifting as well as left or right rear brake setups
• SRAM UDH (Universal Derailleur Hanger)
• Frame weight, size MD with shock: 9.91 lbs (4.5 kg)
Includes:
• Pre-installed integrated mud guard to protect the main pivot area
• Tubeless valves and sealant
• Fidlock Twist Bike Base bottle mount
Select Color
Select Size
From $5,499.00
Transition Sentinel Alloy Eagle 90—
$5,499.00
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Sentinel rides the lines between planted bottomless sender and playful, poppy trail pony. This leaves it right in the sweet spot, as we like to call it. It's versatile attitude helps riders excel and push their limits, making it the one bike most will need. Its intuitive nature is easy to get acquainted with; you'll find yourself sending lines, jumps, and maneuvers you always felt were beyond your ability. Where before you went around, now you go over. Where you pushed up, now you pedal. Where you rolled, now you boost. It's time to Send-It-All.
Product
Transition Sentinel Alloy Eagle 90 Bike
Model Year
2025
Intended Use
Enduro / All-Mountain
Rider
Unisex
Sizes and Geometry
XS 27.5"
SM (29", MX)
MD (29", MX)
LG (29", MX)
XL (29", MX)
XXL (29", MX)
View Full Geometry
Wheel Size
27.5" (650b)
29"
Frame Material
Aluminum
Frame Material Details
Molded chainstay, seatstay, and lower down tube protection
Rear Travel
150mm
Rear Shock
RockShox Super Deluxe Select+, 205mm length x 60mm stroke
Fork
RockShox Lyrik Select+, 35mm stanchions
Fork Travel
160mm
Head Tube Diameter
Tapered, 1.125" top, 1.5" bottom
Headset
FSA No.57E, ZS44 upper, ZS56 lower
Stem
ANVL Swage, 40mm length, 35mm bar clamp
Grips
ODI Elite Flow, lock-on
Brakes
SRAM Maven Bronze, 4-piston
Rotors: SRAM CenterLine, 200mm
Rotors: SRAM CenterLine, 200mm
Brake Levers
SRAM Maven Bronze Stealth, tool-free reach adjust
Drivetrain
1x
Shifters
SRAM Eagle 90 Transmission, 12-speed, MMX mounting bracket
Front Derailleur
None
Rear Derailleur
SRAM Eagle 90 Transmission, 12-speed
ISCG Tabs
ISCG05
Chainguide
None
Cranks
SRAM Eagle 90 Transmission Alloy DUB, 165mm length
Chainrings
SRAM Eagle 90 Transmission, 30 tooth
Bottom Bracket
SRAM DUB, 73mm English/BSA threaded
Pedals
None
Chain
SRAM GX Eagle Transmission Flattop, 12-speed
Cassette
SRAM GX Eagle Transmission XS-1275, 12-speed, 10-52 tooth
Rims
DT Swiss M 1900 Spline 30 Alloy, 30mm inner width
Hubs
DT Swiss 370, 15mm x 110mm (Boost) front, 12mm x 148mm (Boost) rear with Ratchet LN freehub and XD driver
Spokes
DT Swiss Champion
Tires
Front: Maxxis Assegai, 3C MaxxTerra compound, EXO+ casing, 2.5"
Rear: Maxxis Minion DHR II, 3C MaxxTerra compound, EXO+ casing, 2.4"
Rear: Maxxis Minion DHR II, 3C MaxxTerra compound, EXO+ casing, 2.4"
Saddle
SDG Bel-Air V3
Seatpost
OneUp dropper
Drop: 120mm (XS), 150mm (SM), 190mm (MD), 210mm (LG), 240mm (XL/XXL)
Drop: 120mm (XS), 150mm (SM), 190mm (MD), 210mm (LG), 240mm (XL/XXL)
Seatpost Diameter
31.6mm
Seatpost Clamp
Single bolt, 34.9mm
Rear Dropout / Hub Dimensions
12mm x 148mm (Boost)
Max. Tire Size
2.5"
Bottle Cage Mounts
One inside front triangle, plus accessory mounts under top tube
Colors
Deep Purple, Graphite Grey, Glacier White
Warranty
Lifetime frame
Weight
Â
Miscellaneous
• V3 version
• GiddyUp four-bar Horst-link rear suspension design
• XS has 27.5" wheels; SM-XXL have 29" wheels front/rear with option of mixed ("Mullet") wheels (29" front, 27.5" rear) via two-position flip chip at lower shock mount
• Rear travel can be increased to 160mm with longer-stroke (65mm) shock
• Internal cable routing; cable ports on the side of the headtube allow for customizable options for mechanical or wireless shifting as well as left or right rear brake setups
• SRAM UDH (Universal Derailleur Hanger)
• Frame weight, size MD with shock: 9.91 lbs (4.5 kg)
Includes:
• Pre-installed integrated mud guard to protect the main pivot area
• Tubeless valves and sealant
• Fidlock Twist Bike Base bottle mount
• GiddyUp four-bar Horst-link rear suspension design
• XS has 27.5" wheels; SM-XXL have 29" wheels front/rear with option of mixed ("Mullet") wheels (29" front, 27.5" rear) via two-position flip chip at lower shock mount
• Rear travel can be increased to 160mm with longer-stroke (65mm) shock
• Internal cable routing; cable ports on the side of the headtube allow for customizable options for mechanical or wireless shifting as well as left or right rear brake setups
• SRAM UDH (Universal Derailleur Hanger)
• Frame weight, size MD with shock: 9.91 lbs (4.5 kg)
Includes:
• Pre-installed integrated mud guard to protect the main pivot area
• Tubeless valves and sealant
• Fidlock Twist Bike Base bottle mount
