Checkpoint AL 3 | Trek Bikes (INE)

2020

Checkpoint AL 4

You've heard about the new frontier of gravel riding and want to dip your toes into the grit with an affordable, capable ride that can meet your all-road adventure aspirations and also function as your daily commuter.

A 200 Series Alpha Aluminium frame with massive tyre clearance, a carbon disc fork, 12 mm thru-axles, a 2x9 Shimano Sora drivetrain, mudguard and rack mounts, Tektro mechanical disc brakes for all-weather stopping power, Tubeless Ready wheels and 700x32 Bontrager R1 Hard-Case Lite tyres.

A rugged all-road ride for gravel adventures, daily commutes, touring and more! Checkpoint AL 3 gives you all the capability of a true gravel bike at a price that leaves cash in your pocket for camp site fees, race entries and post-adventure fun.

This bike is exceedingly versatile and suited to a wide variety of riding styles, including gravel rides, bikepacking and daily commutes
Massive tyre clearance means you can use tyres up to 38 c for extra traction and stability in any conditions
Mounts on the seat tube and both sides of the down tube make it easy to carry extra gear and water
Internal routing protects your cables, even when the gravel gets muddy
Internal routing protects your cables, even when the gravel gets muddy

Trek's high-performance road alloy, formed into sophisticated tube shapes for maximum strength and minimum weight.

Lightweight fork with carbon fibre legs soaks up hand-numbing road vibration.

All-new Flat Mount disc brakes are more elegant, lighter, smaller and cleaner than traditional disc brakes, providing superior performance and stopping power under harsh conditions.

Bontrager TLR (Tubeless Ready) Road is the first fully integrated tubeless system for road wheels. When you go tubeless with TLR, you can run lower tyre pressure for increased traction and comfort without the threat of pinch flats.

Bontrager Blendr stem technology lets you clip your gear directly to the stem for clean looks and maximum user friendliness.

Learn more

Control Freak is the lightest, quietest, most versatile cable management system. It allows any combination of shift and brake housing to be routed through the frame for clean aesthetics and an easily customisable set-up.

Discreet mounts accommodate full-coverage mudguards for added utility.

Going for a long ride? Rack mounts make carrying accessories a breeze.

DuoTrap S integrates a Bluetooth®/ANT+ sensor into the frame to measure speed, distance and cadence on your computer or smart phone with no added drag. Works with all the major ANT+ wireless players, including Bontrager, Garmin, PowerTap and SRM.

*spec applies to all sizes unless otherwise noted

Frameset

Frame	200 Series Alpha Aluminium, tapered head tube, Control Freak internal routing, rack and mudguard mounts, flat-mount disc, 142x12 mm thru axle
Fork	Checkpoint carbon, tapered alloy steerer, rack and mudguard mounts, flat-mount disc, 12x100 mm thru axle

Wheels

Hub front	Formula RX-512 alloy, 6-bolt, 100x12 mm thru axle
Skewer front	Bontrager Switch thru axle, removable lever
Hub rear	Formula RX-142 alloy, 6-bolt, Shimano 11-speed freehub, 142x12 mm thru axle
Skewer rear	Bontrager Switch thru-axle, removable lever
*Rim	Size: 44, 49, 52, 54, 56, 58, 61 Bontrager Affinity Disc, Tubeless Ready, 24-hole, 21 mm width, Presta valve
*Rim	Size: 44, 49, 52, 54, 56, 58, 61 Bontrager Affinity, Tubeless Ready, 24-hole, 21 mm width, Presta valve
Spokes	14 g aero stainless steel, black
Tyre	Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32 c
Max tyre size	38c Bontrager tyres (with at least 4 mm of clearance to frame)

Drivetrain

Shifter	Shimano Sora R3000, 9-speed
Front derailleur	Shimano Sora R3000, 31.8 mm clamp
Rear derailleur	Shimano Sora R3000, mid cage, 34T max cog
*Crank	Size: 44 Shimano Sora R3000, 50/34 (compact), 165 mm length
	Size: 49, 52, 54, 56 Shimano Sora R3000, 50/34 (compact), 170 mm length
	Size: 58, 61 Shimano Sora R3000, 50/34 (compact), 175 mm length
Bottom bracket	Shimano RS500, 68 mm, threaded external
Cassette	Shimano Sora HG400, 11-32, 9-speed
Chain	Shimano Sora HG53, 9-speed

Components

Saddle	Bontrager Arvada Comp, steel rails, 138 mm width
*Seatpost	Size: 44, 49 Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 250 mm length
*Seatpost	Size: 52, 54, 56, 58, 61 Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 330 mm length
*Handlebar	Size: 44 Bontrager Comp VR-C, alloy, 31.8 mm, 100 mm reach, 124 mm drop, 38 cm width
	Size: 49, 52 Bontrager Comp VR-C, alloy, 31.8 mm, 100 mm reach, 124 mm drop, 40 cm width
	Size: 54, 56 Bontrager Comp VR-C, alloy, 31.8 mm, 100 mm reach, 124 mm drop, 42 cm width
	Size: 58, 61 Bontrager Comp VR-C, alloy, 31.8 mm, 100 mm reach, 124 mm drop, 44 cm width
Handlebar tape	Bontrager Supertack Perf tape
*Stem	Size: 44 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length
	Size: 49 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length
	Size: 52, 54 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length
	Size: 56, 58 Bontrager Elite, 31.8 mm clamp, Blendr-compatible, 7-degree, 100 mm length
	Size: 61 Bontrager Elite, 31.8 mm clamp, Blendr-compatible, 7-degree, 110 mm length
Head set	FSA Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom
Brake	Tektro C550 mechanical disc brake, dual piston, flat-mount, 160 mm rotor

Weight

Weight	56 - 10.50 kg / 23.15 lbs
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 125 kg (275 lb).

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.

Bike and frame weights are based on pre-production painted frames at the time of publication. Weights may vary in final production

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

Rider Height

Inseam

150.0 - 153.0 cm

4'11.1" - 5'0.2"

71.0 - 73.0 cm

28.0" - 28.7"

156.0 - 162.0 cm

5'1.4" - 5'3.8"

74.0 - 77.0 cm

29.1" - 30.3"

163.0 - 168.0 cm

5'4.2" - 5'6.1"

76.0 - 79.0 cm

29.9" - 31.1"

168.0 - 174.0 cm

5'6.1" - 5'8.5"

78.0 - 82.0 cm

30.7" - 32.3"

174.0 - 180.0 cm

5'8.5" - 5'10.9"

81.0 - 85.0 cm

31.9" - 33.5"

180.0 - 185.0 cm

5'10.9" - 6'0.8"

84.0 - 87.0 cm

33.1" - 34.3"

185.0 - 191.0 cm

6'0.8" - 6'3.2"

86.0 - 90.0 cm

33.9" - 35.4"

All measurements provided in cm unless otherwise stated.

Frame size number	A — Seat tube	B — Seat tube angle	C — Head tube length	D — Head angle	E — Effective top tube	F — Bottom bracket height	G — Bottom bracket drop	H — Chainstay length	I — Offset	J — Trail	K — Wheelbase	L — Standover	M — Frame reach	N — Frame stack
44 cm	39.0	75.5°	9.0	70.6°	50.5	27.5	8.0	43.0	5.0	7.2	100.2	68.5	36.8	53.1
49 cm	44.0	75.0°	10.0	71.4°	51.8	27.7	7.8	43.0	5.0	6.6	100.5	72.3	37.3	54.1
52 cm	47.5	74.0°	12.0	71.7°	53.7	27.7	7.8	43.0	5.0	64.6	101.1	75.5	37.6	56.1
54 cm	50.0	73.5°	13.5	71.8°	54.8	27.9	7.6	43.0	5.0	6.4	101.8	77.5	37.8	57.4
56 cm	52.5	73.0°	15.0	72.2°	56.0	27.9	7.6	43.0	5.0	6.1	102.1	79.4	38.0	59.0
58 cm	54.8	73.0°	17.0	72.3°	56.8	28.1	7.4	43.0	5.0	6.1	102.8	81.6	38.2	60.7
61 cm	56.7	73.0°	20.0	72.6°	58.1	28.1	7.4	43.0	5.0	5.9	103.9	83.7	38.6	63.7

Electra brand

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Checkpoint AL 4

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Features

200 Series Alpha Aluminium

Carbon fork

Flat Mount disc brakes

Tubeless Ready rims

Blendr-compatible stem

Learn more

Control Freak Cable Management

Hidden mudguard mounts

Rack mounts

DuoTrap S compatible

Specifications

Sizing & fit