Santa Cruz Bicycles

Blur TR Alloy

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Santa Cruz Bicycles Santa Cruz Bicycles

Blur TR Alloy

The Blur TR harbors enough split personalties to drive journalists nuts.

Is it the perfect aggressive bike for XCers? Or the ideal XC bike for DHers? Or how about the ultimate 26” weapon for those mythical dual slalom, 4X or slope-style categories?

However you analyze it, a stiff 125mm VPP frame, low bottom bracket height and 68° head angle make for a crazy amount of fun, and that’s all that matters.


  • 125mm VPP™ suspension
  • 26" wheels
  • Sizes: S, M, L, XL
  • 142mm rear axle spacing
  • Forged upper and lower links
  • Double sealed pivots with grease ports for low maintenance
  • Collet axle pivots- lock in place without pinch bolts.
  • Angular contact bearings maximize stiffness.
  • Standard or Direct mount rear derailleur option
  • ISCG-05 tabs for chainguide compatibility
  • Stealth and external seatpost cable routing
  • 73mm threaded bb: creak-free riding and easy installation
  • Molded rubber frame protection

Geometry and Sizing

Size Chart

5'0" — 5'5"
5'5" — 5'10"
5'10" — 6'1"
6'1" — 6'6"

Geometry Table

Top Tube Length552.5mm21.8in584.2mm23in609.6mm24in635mm25in
Seat Tube Length400mm15.8in431.8mm17in469.9mm18.5in508mm20in
Head Tube Angle68°68°68°68°68°68°68°68°
Seat Tube Angle72.5°72.5°72.5°72.5°72.5°72.5°72.5°72.5°
BB Height333mm13.1in333mm13.1in333mm13.1in333mm13.1in
Head Tube Length100mm3.9in110mm4.3in120mm4.7in5.5mm140in
Chainstay Length428.3mm16.9in428.3mm16.9in428.3mm16.9in428.3mm16.9in
Standover Height705.5mm27.8in712.4mm28in713.2mm28.1in725mm28.5in
Geometry based on 501mm axle-to-crown (130mm fork)

Shock: Fox Float CTD Evolution

Tech Info

Frame MaterialAluminum
Suspension SystemVPP
Headset Diametermixed taper 1.5" Lower, 1'1/8" upper
Seat Post30.9
Compatible Fork Sizes120-140mm
BB ShellStandard
Max Tire Size2.4"
Brake TypesDisc, 203mm rear rotor max
Water Bottle Mounts2x bottle cage mounts

Builds & Price

Frame Only

  • Blur TR Alloy frame + Float CTD6.58 lbs / 3 kgs$1950 USD
  • Blur TR Alloy frame + Float CTDK6.58 lbs / 3 kgs$2150 USD

Full Bikes

Click here to customize.

32 Float CTD 130 $309913.597kgs29.91lbs$506413.082kgs28.78lbs$549112.634kgs27.79lbs$697412.69kgs27.91lbs
32 Float CTDK 130$387613.417kgs29.5lbs$522812.902kgs28.37lbs$565512.454kgs27.38lbs$713812.51kgs27.5lbs
  • Pricing in USD. Price and specifications subject to change without notice.
  • Price includes shock Float CTD
  • ENVE wheel upgrade available.
  • § 2X chainring upgrade available free of charge.
  • Santa Cruz Best Deal.


Can I mount a chainguide to my bike?

Yes, this bike has been designed with ISCG-05 chainguide mounting tabs. We have had great luck with the E13 LG1 Tr, MRP Lopes guide or Mini G3. For dual ring guides, try the E13 TRS+Dual or MRP 2x guides. These should fit with minimal or no modification.

Can I use a dropper post on this bike?

Yes, we have included routing for remote-actuated telescoping seatposts on the frame. Some newer frames also have internal routing for "stealth" posts.

It looks like the lower link is off center in my frame- is everything ok?

Yes- this is correct. With our newer pivot system, the pivot axle draws the link over to one side in order to properly preload the bearings. This offset is accounted for in the frame design so everything ends up nice and straight in the end.

What fork sizes are recommended?

120mm-140mm. Typically the forks we offer are 130mm, which is kind of the sweet spot, but they can all be reduced to 120mm or extended to 140mm by changing some internal parts.

What is the torque spec for the seat collar?

We don't provide a torque spec for the seatpost, because it really depends on what seatpost you are using. Some seatposts are slippery, and require more torque to stay put, and others are very thin- and can be crushed by overzealous tightening. Some are both slippery and thin...
You will not damage your frame by overtightening the seat collar, assuming you have a 30.9mm seatpost in it.

What kind of front derailleur do I need?

This bike uses a 34.9mm Bottom Swing (high clamp), Top Pull front derailleur.

What kind of headset does this bike use?

We use a headset generally referred to as "mixed tapered". This is a 44mm internal upper cup, with an external 49mm lower cup. The SHIS name is ZS44/28.6 EC49/40.

What kind of rear brake adaptor do I need?

This frame uses a standard IS rear brake mount. Just pick your rotor size and order the correct adaptor to go from IS to post mount (all modern brakes).

What q-factor should I use for the cranks?

On any crank with optional Q-factor, choose the wider version.  166 for Sram XX, or 168 for XX1.  For Shimano doubles, we recommend the M980.  

What size bottom bracket shell does this bike use?

We use a standard 73mm threaded BB. Nearly any crank on the market (besides BB30 cranks) will fit.

What size hub do I need?

This bike uses a 142x12 through-axle rear hub, and includes a DT RWS axle.

What size seatpost do I need?

We use a 30.9mm seatpost. Always ensure it is inserted into the frame a minimum of 100mm (4").

What size shock does it use?

This bike uses a 200x51mm shock with 22x8mm eyelet hardware (21.8mm x 8mm for SRAM). Please do not use any other shock size or modify with eccentric shock bushings- this can cause damage or clearance issues with the frame.

Why does this frame use a standard thread-in bottom bracket, when many of your competitors use press-in style (BB30, Pressfit 30, BB90, BB92, BB86)

It is true that there are some slight weight savings available with the various pressfit bb designs (exact weight savings obviously vary depending on system, frame manufacturing techniques, and crank model), but we don't feel this small savings make up for the inconveniences. We are still able to make a frame that is lighter than most of our competitors, while still using a heavier bb system. There are a number of disadvantages that exist with press fit systems:

1) Special installation and removal tools are required for these parts, including a headset press. This is not convenient for most home mechanics, and they are quite expensive. Traditional external BB's can be installed or removed with a simple $10 hand tool.

2) "Permanently installed cups". Shimano doesn't recommend removing and re-installing their press in bb cups (as they may become damaged), so moving parts from bike to bike is no longer an option.

3) Creaking or shifting bb's can be common with these systems. Since the bearing is pressed into a cup, which is then pressed into the frame- it can be hard to get all of the press fits snug- without being too tight on the bearing or too loose in the frame.

4) Reasonable tube sizes. One of the most commonly claimed advantages of a larger bb shell is the larger diameter downtube that goes with it. This may be an advantage on road bikes, where tubes can be incredibly thin and large for optimal stiffness. On a mountain bike, this area of the frame sees a lot of abuse from rocks and crashing, and needs to have a certain amount of wall thickness to survive actual use. Using what we consider a "safe" wall thickness and carbon layup, and a fairly typical tube diameter, we get an exceedingly stiff, light, durable product. If we used a larger downtube, we would either have a heavier frame (same wall thickness but larger diameter), or a less durable product (thinner walls and larger diameter).

5) Chain clearance. Take a look at some of our competitors frames with press in bb shells. The down tube comes so close to the chainrings that many frames have chainsuck guards on the downtube! In our mind, the chain should be able to fall off on a mountain bike and not get jammed between your crank and thin-walled carbon downtube.

6) Backwards compatibility: Many of our customers purchase a frame and build it up with their choice of parts, or parts from an old bike. By using a standard bb, we are compatible with everything without requiring confusing adaptors.

7) Chainguide compatibility: While it may seem strange to talk about putting chainguides on a short travel bike, it is becoming more common now with 10 speed drivetrains. Thread in bb's mean the frame is compatible with bb mount chainguides. We like versatility....