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Marin Eldridge Grade Base 27.5

Marin Eldridge Grade Base 27.5
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This item is not permitted to be shipped, but it can be purchased online and picked up from any one of our shop locations at your convenience.


The Eldridge Grade is built around a Series 1 aluminum hardtail frame and SR/Suntour XCM fork with 120mm travel and preload adjustment. A smooth shifting Shimano 3x8 drivetrain helps get you up and down the hills, while powerful hydraulic disc brakes provide smooth and steady braking.

Key upgrades over the Sky Trail:

-Shimano Acera/Altus 3x8 drivetrain
-Tektro M275 hydraulic disc brakes
-SR Suntour XCM Disc fork w/ 120mm travel

Eldridge Grade geometry diagram

All lengths in millimeters

A Stack 610 610 650
B Reach 383.5 398.5 417
C Headtube Angle 69° 69° 69°
D Headtube Length 100 100 105
E Seattube Angle 73° 73° 73°
F Seattube Length 406 456 506
G Toptube Effective 570 585 605
H BB Height 299 299 299
I BB Drop 47 47 47
J Chainstay 430 430 430
K Wheelbase 1072 1087 1107
L Standover Height 713 753 793
M Fork Offset 46 46 46
Seatpost Diameter 27.2 27.2 27.2
Handlebar Width 740 740 740
Stem Length 45 45 45
Crank Length 170 170 170


Frame Series 1 6061 Aluminum, 27.5” Wheels, 68mm BB shell, 135mm Forged Dropouts, Disc Brake
Fork SR Suntour XCM Disc, 120mm Travel, Preload Adjustment
Headset 44mm Zero Stack, 8mm Cone
Rims/Wheels Double Wall Alloy Rims
Hubs Forged Alloy, 6-Bolt Disc, 32H
Spokes Black Stainless Steel, Brass Nipples
Tires MTB, 27.5x2.25"
Crankset Forged Alloy, Steel Chainrings, 36/22T
Bottom Bracket Sealed Cartridge Bearings, Square Taper
Chain KMC Z8
Front Derailleur Shimano Altus
Rear Derailleur Shimano Acera, 8-Speed
Rear Cogs Shimano HG-200, 8-Speed, 11-32T
Shifters Shimano SLM315 Rapid Fire, 2x8-Speed
Handlebars 31.8 Riser, 20mm Rise, 740mm Width
Tape/Grips Entity MTB, Closed End
Stem Alloy, 31.8mm, 45mm
Brakes Tektro M275 Hydraulic Disc
Pedals Nylon Platform
Saddle Entity MTB
Seat Post Alloy, 27.2mm

* Subject to change without notice.

Part Numbers

Option Store SKU
Blue/Orange / Small 210000095404
Blue/Orange / Medium 210000095406
Blue/Orange / Large 210000095402