Santa Cruz Blur 4 C Eagle 70 TR Complete Mountain Bike 2026
Model Info
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Product Info
The Santa Cruz Blur 4 C Eagle 70 TR Complete Mountain Bike is an everyday whippet with the heart of an enduro bike. With more travel and a slightly beefier build than the standard Blur, this TR build is more trail-capable, but it's still light years from being a tank. With great geo, suspension, and bigger trail tires, this is a bike that'll make your overbiked buddies reconsider their speed-to-squish ratios. To top it off, this build comes with SRAM's all new Eagle 70 T-Type drivetrain, delivering crisp cable actuated shifting with best-in-class durability and full compatibility across the Transmission ecosystem.
Product Details
Key Features
Carbon C Frame – A minimal weight gain of approximately 250 - 280 grams (0.6 lbs) for the C frame over the CC due to the different grade of carbon used. Whether you're riding a carbon CC or C frame, you get exactly the same legendary strength and stiffness because Santa Cruz uses exactly the same manufacturing facility and techniques.
Travel – 120mm Front / 115mm Rear
Wheel Size – 29"
Superlight™ Suspension – Cross-country racing isn't a power lap around the park anymore. The courses are challenging and the competition fierce. Superlight™ provides traction to avoid the wobblers but keeps overall weight down. By reducing the amount of moving parts, bearings and linkages, Santa Cruz save up to 289g over previous models.
Proportional Chainstay Lengths – With rear ends that match the size range, this bike's geo and ride quality is the same for all riders.
Internal Brake & Dropper Cable Routing
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:
Cross Country
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Used For
Cross Country With speed and pedaling efficiency in mind, cross country (XC) bikes are the lightest mountain bikes with the least suspension travel (typically 0 - 120mm).
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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.
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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.
- Gearing: 1 x 12
- Water Bottle Mounts: 2
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Fork:
RockShox SID
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Fork
RockShox SID SID is built with a stiff, lightweight 35mm chassis and uses the new Rush damper that offers a firm lockout and easy to adjust rebound. Proven-ready for a new generation of more capable XC bikes.
Fork Adjustments - Air Spring Pressure / Open and Lockout Compression / Rebound - Stanchion Diameter (mm): 35
- Fork Travel (mm): 120
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Rear Shock:
Fox Float Rhythm
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Rear Shock
Fox Float Rhythm FLOAT answers the demands of the modern trail rider. A firm pedal platform for uphill efficiency and confidence-inducing, trail-hugging descent capability, all in a lightweight package. - Rear Travel (mm): 115
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Shifters:
SRAM Eagle 90 T-Type
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Shifters
SRAM Eagle 90 T-Type The feel, look and shift quality of the Eagle 90 Shifter
allow you to ride in a whole new way. Optimized
cable pull with a revised lever position for maximum
control. With a new T-Type cable actuation ratio,
Eagle 90 offers 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:
SRAM Eagle 70 DUB T-Type, 34t
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Crankset
SRAM Eagle 70 DUB T-Type, 34t The new Eagle 70 crankset is a sleek, sturdy
answer to a growing demand for robust and
aesthetically pleasing components. Featuring
3-bolt chainring compatibility, the Eagle 70
crankset features a stamped steel T-Type
chainring with optional bashguards for optimal
durability and protection on the trail -
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. - Bottom Bracket: SRAM DUB 73mm MTB Wide BB
- 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 Centerline 180mm
- Headset: FSA IS-2/47/42 ACB or Cane Creek 10 IS Integrated
- Stem: Race Face Ride, 60mm
- Saddle: SDG Bel-Air V3
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Seatpost:
SDG Tellis Dropper 31.6mm
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Seatpost
SDG Tellis Dropper 31.6mm The SDG Tellis Dropper is an absolute workhorse. A dropper post and remote combo with unsurpassed durability, reliability and simplicity. This post features a fully sealed cartridge system that'll operate smoothly in the wettest, coldest, and muddiest conditions. - Hubs: SRAM MTH 716/746
- Rims: RaceFace AR Offset 27mm 29"
- Spokes: Sapim Race
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Front Tire:
Maxxis Rekon 2.4" | 3C MaxxTerra, EXO
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Front Tire
Maxxis Rekon 2.4" | 3C MaxxTerra, EXO The Rekon is a light duty trail tire designed to go fast in technical terrain.- 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.
- EXO: A cut and abrasion-resistant material added to the sidewalls.
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Rear Tire:
Maxxis Rekon 2.4" | 3C MaxxTerra, EXO
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Rear Tire
Maxxis Rekon 2.4" | 3C MaxxTerra, EXO The Rekon is a light duty trail tire designed to go fast in technical terrain.- 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.
- EXO: A cut and abrasion-resistant material added to the sidewalls.
- Warranty: Limited Lifetime (Frame)
| Size | S | M | L | XL |
| Rider Height | 5'1" - 5'5" | 5'5" - 5'9" | 5'9" - 6'1" | 6'1" - 6'5" |
| Reach (mm) | 412 | 438 | 458 | 483 |
| Stack (mm) | 587 | 597 | 607 | 621 |
| Effective Top Tube (mm) | 568 | 597 | 621 | 652 |
| Seat Tube (mm) | 405 | 430 | 470 | 520 |
| Head Tube Angle (°) | 67.1 | 67.1 | 67.1 | 67.1 |
| Seat Tube Angle (°) | 75.1 | 75 | 74.9 | 74.8 |
| Chainstay Length (mm) | 431 | 433 | 436 | 438 |
| Bottom Bracket Height (mm) | 340 | 340 | 340 | 340 |
| Bottom Bracket Drop (mm) | 33 | 33 | 33 | 33 |
| Head Tube Length (mm) | 90 | 100 | 110 | 125 |
| Wheelbase (mm) | 1126 | 1157 | 1193 | 1216 |
| Standover Height (mm) | 744 | 746 | 745 | 750 |
| Wheel Size | 29" | 29" | 29" | 29" |