Blackthorn 125 Eagle 70 Bike - 29" Aluminum

Blackthorn 125 Eagle 70 Transmission is all about balanced performance.

Its aluminum frame features our trail geometry: a slack 64.7-degree head angle for downhill stability and a steep 78.3-degree seat tube for comfortable seated climbing. The 125mm rear suspension travel comes via our Split Pivot system, which optimizes both pedaling and braking performance for excellent pedaling efficiency and braking traction. A 140mm-travel RockShox Pike fork up front helps tame technical trails for a smooth, controlled ride.

Blackthorn’s cargo mounts let you load up for longer rides: fit two bottles, a repair kit, snacks, and other essentials without worrying where it’ll all go at the last minute (and leave the sweaty hip pack at home). The SRAM Eagle 70 drivetrain is durable enough for all your adventures and makes it easy to find the right gearing for the trail’s ups and downs. Is this one of the best aluminum trail bikes for riders who want a little of everything in an MTB? Throw a leg over Blackthorn 125 and see why we think so.

Key Features

Split Pivot Suspension System

• Allows us to tune the pedaling and braking forces independently
• Maximizes pedaling and braking performance without compromising either
• Results in optimal pedaling efficiency and traction when braking

Split Pivot +

• Multiple travel classes in one chassis provides riders with the opportunity to adapt their bikes to various adventures

Flip Chip

• Provides the ability to alternate wheel and tire sizes
• Riders can adjust for their terrain, or desired handling characteristics

Suspension Kinematics

• Lively, responsive ride feel with good bottom-out resistance
• Free, active, and uniform suspension feel under braking
• Efficient pedaling, stellar climbing traction, supple small-bump performance
• Tunable for all riders

Details - Build Kit

Frameset

Components

Drivetrain

Wheels

Weight

Additional Features

Split Pivot rear suspension design
Split Pivot provides a host of impressive suspension characteristics because the system isolates pedaling forces and braking forces from each other, allowing us to tune and optimize the bike for both independently. The concentric rear axle pivot, in conjunction with precise wheel link, brake link, and control link placement, results in excellent bump compliance and pedaling efficiency, smooth and predictable braking throughout travel, and maximum traction

Split Pivot + design methodology
The Split Pivot+ design methodology allows our engineers to optimize a frame for more than one travel class. This means that Blackthorn 125 riders can swap control and shock links, in addition to the rear shock and fork, to switch travel to Blackthorn 145's 145mm rear and 160 mm front capability. One frame, multiple bikes.

Progressive leverage rate
Blackthorn is designed with a progressive leverage rate that offers plenty of bottom out performance at the end of the stroke, promoting more confidence and control on bigger hits and a deeper feel to the travel. The beginning and mid-stroke provide extremely supple small bump compliance off the top for a smooth ride and consistent mid-travel support to help combat rider fatigue and maintain bike geometry. 

Purpose-tuned suspension
Blackthorn-specific control link and shock links optimize the frame geometry and kinematics for its suspension travel, delivering a well-rounded, balanced trail feel.

Trail geometry
Blackthorn 125 balances descending confidence with pedaling performance for all-around riding. A 64.7-degree head tube angle makes for a long front center, translating to stability when descending loose, steep trails or railing through rock gardens. Blackthorn’s steep 78.3-degree seat tube angle puts you in a comfortable pedaling position for flats and climbs. Short 432–433mm chainstays keep Blackthorn 125 feeling nimble.

Flip chip
A flip chip allows a simple and quick 5mm adjustment to bottom bracket height and 0.3-degree adjustment to head tube angle to account for your personal preference, terrain, or wheel size and tire diameter

6061-T6 aluminum frame
Heat-treated aluminum frame for stiffness and durability.

Top tube accessory mounts
Top tube mounts accommodate the Salsa EXP-R Series Trillium Top Tube Bag or K-Edge Top Tube Mount for bike computers 

Fits two bottles on all sizes
Stay hydrated on long trail rides with space for two bottles on all frame sizes.

Integrated repair kit location
Bring your multitool and tube without scuffing your frame or hauling around a hip pack.

Versatile wheel and tire fit
Blackthorn features clearance for up to 29 x 2.5" tires and is compatible with mixed wheel sizes

Coil shock compatibility
Blackthorn is compatible with most coil shocks.

Molded frame protection
Molded rubber down tube, seat tube, chainstay, and seatstay guards protect your frame from impacts and abrasion.