Bicycle Archive · Specification report

2025 Trek Rail+ 9.8 GX AXS T-Type Gen 5

Velopedia Archive ID 900000807

Overview

Model year	2025
Brand	Trek
Model	Rail+ 9.8 GX AXS T-Type Gen 5
Bicycle type	Electric-assist
Archive ID	900000807
Original MSRP	$8,499.93
Colors	Pennyflake
Sizes	S; M; L; XL
Weight	M - 24.18 kg / 53.31 lbs (with TLR sealant, no tubes)

Frameset

Frame construction	OCLV Mountain Carbon, Removable Integrated Battery (RIB 2.0), tapered head tube, guided internal routing, Motor Armor, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, 34.9mm seat tube, ABP, UDH Boost148, 12 mm thru axle, 160 mm travel
Frame material	Carbon fiber
Fork	Fox Performance Elite Float 38, Float EVOL air spring, GRIP X damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt-X axle, 160mm travel
Rear shock	Fox Performance Elite Float X, 2-position damper, 205mm x 65mm

Drivetrain

Component group	SRAM GX Eagle AXS, T-Type, 12-speed
Shifters	SRAM AXS POD
Rear derailleur	SRAM GX Eagle AXS, T-Type
Crankset	SRAM GX, 160mm length
Cassette	SRAM Eagle XS-1275, T-Type, 10-52, 12 speed
Chain	SRAM GX Eagle, T-Type, 12 speed
Pedals	Nylon platform

Brakes

Brakes	SRAM Maven Bronze 4-piston hydraulic disc

Cockpit & contact points

Headset	S, M, L, XL: Integrated cartridge bearing, 1-1/8'' top, 1.5'' bottom, angle adjust cup compatible / S, M, L, XL: 1-1/8'' threadless, sealed cartridge bearings
Handlebar	Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width
Stem	Bontrager Line Pro, 35mm, Blendr compatible, 0 degree, 45mm length
Saddle	Verse Short Comp, steel rails, 145mm width
Seatpost	S: Bontrager Line Dropper, 150mm travel, MaxFlow, internal routing, 34.9mm, 410mm length / M, L, XL: Bontrager Line Dropper, 170mm travel, MaxFlow, internal routing, 34.9mm, 450mm length / L, XL: Bontrager Line Dropper, 200mm travel, MaxFlow, internal routing, 34.9mm, 515mm length

Wheels & tires

Wheels	(F) S: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 27.5'' / M, L, XL: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29'' / (R) Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12mm thru axle, 27.5''
Front tire	S, M, L, XL: Bontrager Brevard RSL SE, Tubeless Ready, triple compound, aramid bead, 60 tpi, 27.5x2.50'' / M, L, XL: Bontrager Brevard RSL SE, Tubeless Ready, triple compound, aramid bead, 60 tpi, 29x2.50''
Rear tire	S, M, L, XL: Bontrager Brevard RSL SE, Tubeless Ready, triple compound, aramid bead, 60 tpi, 27.5x2.50'' / M, L, XL: Bontrager Brevard RSL SE, Tubeless Ready, triple compound, aramid bead, 60 tpi, 29x2.50''

Geometry · 15.5" (S) · High

Seat tube	380 mm
Effective top tube	562 mm
Head tube	100 mm
Head-tube angle	65°
Seat-tube angle	77.9°
Actual seat-tube angle	75.3°
Chainstay / rear center	446 mm
Wheelbase	1201 mm
Bottom-bracket drop	12 mm
Bottom-bracket height	345 mm
Reach	435 mm
Stack	594 mm
Standover height	763 mm
Fork offset / rake	43 mm
Front center	754 mm
Trail	119 mm
Wheel size	27.5"

Geometry · 15.5" (S) · Low

Seat tube	380 mm
Effective top tube	563 mm
Head tube	100 mm
Head-tube angle	64.5°
Seat-tube angle	77.4°
Actual seat-tube angle	74.8°
Chainstay / rear center	448 mm
Wheelbase	1202 mm
Bottom-bracket drop	18 mm
Bottom-bracket height	339 mm
Reach	430 mm
Stack	598 mm
Standover height	758 mm
Fork offset / rake	43 mm
Front center	754 mm
Trail	122 mm
Wheel size	27.5"

Geometry · 17.5" (M) · High

Seat tube	410 mm
Effective top tube	591 mm
Head tube	100 mm
Head-tube angle	65°
Seat-tube angle	77.7°
Actual seat-tube angle	75.3°
Chainstay / rear center	446 mm
Wheelbase	1229 mm
Bottom-bracket drop	18 mm
Bottom-bracket height	345 mm
Reach	455 mm
Stack	627 mm
Standover height	775 mm
Fork offset / rake	43 mm
Front center	783 mm
Trail	127 mm
Wheel size	29"/27.5"

Geometry · 17.5" (M) · Low

Seat tube	410 mm
Effective top tube	592 mm
Head tube	100 mm
Head-tube angle	64.5°
Seat-tube angle	77.2°
Actual seat-tube angle	74.8°
Chainstay / rear center	448 mm
Wheelbase	1230 mm
Bottom-bracket drop	24 mm
Bottom-bracket height	339 mm
Reach	450 mm
Stack	631 mm
Standover height	769 mm
Fork offset / rake	43 mm
Front center	783 mm
Trail	131 mm
Wheel size	29"/27.5"

Geometry · 19.5" (L) · High

Seat tube	435 mm
Effective top tube	638 mm
Head tube	120 mm
Head-tube angle	65°
Seat-tube angle	77.5°
Actual seat-tube angle	75.2°
Chainstay / rear center	446 mm
Wheelbase	1277 mm
Bottom-bracket drop	17 mm
Bottom-bracket height	345 mm
Reach	495 mm
Stack	645 mm
Standover height	775 mm
Fork offset / rake	43 mm
Front center	831 mm
Trail	127 mm
Wheel size	29"/27.5"

Geometry · 19.5" (L) · Low

Seat tube	435 mm
Effective top tube	639 mm
Head tube	120 mm
Head-tube angle	64.5°
Seat-tube angle	77°
Actual seat-tube angle	74.8°
Chainstay / rear center	448 mm
Wheelbase	1278 mm
Bottom-bracket drop	24 mm
Bottom-bracket height	339 mm
Reach	490 mm
Stack	649 mm
Standover height	769 mm
Fork offset / rake	43 mm
Front center	831 mm
Trail	131 mm
Wheel size	29"/27.5"

Geometry · 21.5" (XL) · High

Seat tube	470 mm
Effective top tube	669 mm
Head tube	145 mm
Head-tube angle	64.9°
Seat-tube angle	77.4°
Actual seat-tube angle	75.2°
Chainstay / rear center	446 mm
Wheelbase	1313 mm
Bottom-bracket drop	17 mm
Bottom-bracket height	345 mm
Reach	520 mm
Stack	668 mm
Standover height	798 mm
Fork offset / rake	43 mm
Front center	867 mm
Trail	127 mm
Wheel size	29"/27.5"

Geometry · 21.5" (XL) · Low

Seat tube	470 mm
Effective top tube	670 mm
Head tube	145 mm
Head-tube angle	64.5°
Seat-tube angle	76.9°
Actual seat-tube angle	74.8°
Chainstay / rear center	448 mm
Wheelbase	1314 mm
Bottom-bracket drop	24 mm
Bottom-bracket height	339 mm
Reach	515 mm
Stack	672 mm
Standover height	779 mm
Fork offset / rake	43 mm
Front center	867 mm
Trail	131 mm
Wheel size	29"/27.5"

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on August 23, 2026.