Santa Cruz Bullit 4 C Eagle 70 E-Mountain Bike 2026
Model Info
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Product Info
If you think e-bikes aren't for you because you're a "serious" rider, think again. The Santa Cruz Bullit 4 C Eagle 70 E-Mountain Bike crushes the steepest, rowdiest trails with a descent focused geometry that transforms "absolutely not" into "send it!" Powered by the super reliable Bosch Performance Line CX drive unit, this beast combines an aggressive Nomad-inspired chassis with four-bar suspension for maximum control when things get spicy. The all new SRAM Eagle 70 T-Type drivetrain and DB8 brakes handle technical terrain with confidence and precision, while 170mm of front and rear travel delivers downhill bike capability without the dual-crown commitment.
Product Details
Key Features
Carbon C Frame – Manufactured in their exclusive factory, Santa Cruz controls how their designs are produced, ensuring the highest quality control. Their production C series carbon frames are strong as hell, with optimized layups and the latest techniques.
Travel – 170mm Front / 170mm Rear
Wheel Size – Mixed Wheel (29" Front / 27.5" Rear)
Bosch Performance Line CX Drive Unit – The next generation Bosch Performance Line CX motor is quieter, lighter, and smaller than ever. More compact but no less powerful, it comes with a maximum torque of 85Nm. Choose between 4 standard modes and customize your ride in the Bosch Flow App.
Discreet Top Tube Display – The built-in display on the toptube allows for battery charge and mode to be displayed. The display can also be used to turn system on/off and toggle modes. More detail (% battery charge and range) can be found by using the app.
Independently Adjustable Geo and Progression Chips – The geo chip raises or lowers the bottom bracket 4mm, and adjusts the head tube angle by 0.3°. The progression chip changes the progression from 26-29%.
Tool Mount – Discreet mounting bolts underneath the top tube allows for clean, on-bike-storage of tools, tubes or an AirTag.
Specs
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Biking Type:
Mountain
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Biking Type
Mountain Mountain bikes are built for tackling rough terrain with frames made of durable materials like aluminum or carbon fiber, ensuring stability and maneuverability. They feature suspension to absorb impacts from rocks, roots, and drops, providing a smoother ride.
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Used For:
Enduro
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Used For
Enduro If you’re looking for maximum performance while flying down heavier trails, an enduro bike is for you. These bikes combine ample suspension travel (typically 150mm+) with descent-focused frame geometry and components that allow for reasonably efficient pedaling.
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Suspension:
Full Suspension
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Suspension
Full Suspension Engineered to tackle the most challenging terrain with enhanced comfort and control. Unlike hardtail bikes, full suspension bikes feature both front and rear suspension systems that allow the wheels to move independently from the frame.
- Gearing: 1 x 12
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Frame Material:
Carbon
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Frame Material
Carbon Carbon is a composite frame material. Unlike metals, carbon is composed of fibrous strands woven into a grid and bonded with epoxy. Carbon is favored by many for its lightness and stiffness but its complexity in fabrication makes it the most expensive option.
- Water Bottle Mounts: 1
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Fork:
RockShox ZEB
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Fork
RockShox ZEB The next evolution of single crown awesome is here. RockShox created a whole new breed of fork, designed to challenge the limits and take on the world’s toughest enduro tracks. ZEB’s stiff yet versatile 38mm chassis and machined good looks pack a punch and deliver a clear tactical advantage to win races. - Stanchion Diameter (mm): 38
- Fork Travel (mm): 170
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Rear Shock:
Fox Float X Performance
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Rear Shock
Fox Float X Performance From aggressive trail to enduro, the advanced damping, fade free performance and class-leading durability of Float X makes it the versatile and lightweight choice for All-Mountain riders earning their descents.
Shock Adjustments - Air Spring Pressure / 2-Position Open/Firm Lever / Rebound - Rear Travel (mm): 170
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Drive Unit:
Bosch Performance Line CX BDU38
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Drive Unit
Bosch Performance Line CX BDU38 The next generation Bosch Performance Line CX motor is quieter, lighter, and smaller than ever. More compact but no less powerful, it comes with a maximum torque of 85Nm. Choose between 4 standard modes and customize your ride in the Bosch Flow App. -
Battery:
Bosch PowerTube 600Wh
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Battery
Bosch PowerTube 600Wh Thanks to their range, long service life, intelligent battery management system and easy handling, Bosch Power Tube lithium-ion batteries are among the most modern on the market. All those decades of Bosch experience has paid off! -
Shifters:
SRAM Eagle 70 T-Type
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Shifters
SRAM Eagle 70 T-Type The feel, look and shift quality of the Eagle 70 Shifter
allow you to ride in a whole new way. Optimized cable
pull with a revised lever position for maximum control
and new T-Type actuation, Eagle 70 is able to offer
a higher quality of shift than any previous mechanical
system. -
Rear Derailleur:
SRAM Eagle 70 T-Type, 12 Speed
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Rear Derailleur
SRAM Eagle 70 T-Type, 12 Speed The Eagle 70 Transmission derailleur is the bedrock
of the best cable-actuated Transmission shift
experience. It features an all-new T-Type cable
actuation ratio to provide the most precise and crisp
shifts every time. Utilizing the same Full Mount design
as its electronic siblings, the Eagle 70 Transmission
derailleur brings strength and dependability to
any bike. The derailleur body features a replaceable
skid plate like GX, X0, and 90 and shares many
of the same rebuildable qualities of those high end derailleurs. - Crankset: e*thirteen Helix eSpec, 155mm
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Cassette:
SRAM Eagle T-Type XS-1270, 10-52t
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Cassette
SRAM Eagle T-Type XS-1270, 10-52t Housing the same medal-winning technology
as our other Transmission cassettes, our XS-1270
Cassette offers incredible performance with
amazing value. Finished in a unique black nickel
chrome, this cassette is quiet and durable and
features a replaceable cluster of gears 8-12.
And for the first time on a traditional splined driver
body, features a full 10-52t range thanks to the
55mm chainline and integration of the 10-tooth
cog and lockring. -
Chain:
SRAM Eagle 70 T-Type Flattop, 12-Speed
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Chain
SRAM Eagle 70 T-Type Flattop, 12-Speed The Eagle 70 chain features all the benefit
of our T-Type Flattop design found in our most
premium Eagle Transmissions. Fully E-MTB
compatible, the Eagle 70 chain is robust, durable
and ready for any ride. - Pedals: Not Included
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Brake Levers:
SRAM DB8
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Brake Levers
SRAM DB8 DB8 is SRAM's simple, robust, and powerful brake for riders who prefer to set and forget. The low maintenance Mineral Oil system uses proven lever technologies and features easy adjustment access and superior ergonomic comfort. Code-like power is no surprise, as DB8 utilizes similar caliper architecture and existing brake pads. - Brake Calipers: SRAM DB8
- Rotors: SRAM HS2 | 200mm Front & Rear
- Headset: FSA IS-2/47/42 ACB
- Stem: OneUp Stem, 42mm
- Saddle: SDG Bel-Air V3, Max
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Seatpost:
OneUp Dropper
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Seatpost
OneUp Dropper Known for its no-nonsense smooth cable actuation, short overall length, and easy serviceability, the OneUp Dropper is a solid choice for dependable and customizable performance. - Hubs: SRAM MTH 716 / 746
- Rims: Reserve 30|HD AL
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Front Tire:
Maxxis Assegai 2.5" | 3C MaxxGrip, DoubleDown, TR
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Front Tire
Maxxis Assegai 2.5" | 3C MaxxGrip, DoubleDown, TR Greg Minnaar’s signature tire – the Maxxis Assegai – provides tenacious, predictable grip across the entire profile no matter the lean angle. The Assegai can be used front and rear for a surefooted feel or as a front paired with a faster rolling rear tire.- 3C MaxxGrip: The stickiest, slowest rebounding rubber Maxxis offers.
- DoubleDown (DD): Two layers of lightweight 120 TPI casing combined with a butyl sidewall insert creates a highly durable tire with more trail feedback than a Downhill casing tire.
- Tubeless Ready (TR): Tubeless tires allow riders to run lower air pressures for improved traction, lower rolling resistance, and less chance of flatting.
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Rear Tire:
Maxxis Minion DHR II 2.4" | 3C MaxxTerra, DoubleDown, TR
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Rear Tire
Maxxis Minion DHR II 2.4" | 3C MaxxTerra, DoubleDown, TR With side knobs borrowed from the legendary Minion DHF, but widened to provide more support, the DHR II corners like no other. The center tread features ramped leading edges to improve acceleration and sipes to create a smooth transition when leaning the bike. Paddle-like knobs on the center tread dig in under hard braking and help keep the bike under control.- 3C MaxxTerra: A triple compound ideal for trail riding in all conditions - offers more traction than 3C MaxxSpeed, yet provides better treadwear and less rolling resistance than 3C MaxxGrip.
- DoubleDown (DD): Two layers of lightweight 120 TPI casing combined with a butyl sidewall insert creates a highly durable tire with more trail feedback than a Downhill casing tire.
- Tubeless Ready (TR): Tubeless tires allow riders to run lower air pressures for improved traction, lower rolling resistance, and less chance of flatting.
- Warranty: Limited Lifetime (Frame and Bearings)
| Size | S | M | L | XL | XXL |
| Rider Height | 5''1" - 5'5" | 5''5" - 5'9" | 5'9" - 6'1" | 6'1" - 6'4" | 6'4" - 6'7" |
| Reach (mm) | 432 | 456 | 477 | 497 | 522 |
| Stack (mm) | 625 | 635 | 643 | 656 | 674 |
| Effective Top Tube (mm) | 572 | 597 | 618 | 641 | 671 |
| Seat Tube (mm) | 380 | 400 | 420 | 460 | 500 |
| Head Tube Angle (°) | 63.3 | 63.3 | 63.3 | 63.3 | 63.3 |
| Seat Tube Angle (°) | 77.1 | 77.1 | 77.1 | 77.1 | 77.1 |
| Chainstay Length (mm) | 441 | 444 | 447 | 450 | 453 |
| Bottom Bracket Height (mm) | 342 | 342 | 342 | 342 | 342 |
| Bottom Bracket Drop (mm) | 31 | 31 | 31 | 31 | 31 |
| Head Tube Length (mm) | 100 | 110 | 120 | 135 | 155 |
| Wheelbase (mm) | 1221 | 1253 | 1280 | 1310 | 1347 |
| Standover Height (mm) | 740 | 735 | 733 | 733 | 730 |
| Complete Weight (lbs) | 49.4 | ||||
| Complete Weight (kg) | 22.4 | ||||
| Wheel Size | Mixed Wheel | Mixed Wheel | Mixed Wheel | Mixed Wheel | Mixed Wheel |