The Crankbrothers Synthesis DH Alloy i9 1/1 Rear Wheel is built for downhill and aggressive freeride riding. With a reinforced alloy rim and i9 1/1 hub, this wheel withstands brutal impacts and cornering loads. Designed for modern DH bikes with Boost spacing, it delivers stiffness and stability exactly where needed. Priced at $98.38 (compare at $412.49), you save $314.11—76% off. Get this DH workhorse now.
Specifications
Brand: Crankbrothers
Model: Synthesis DH Alloy i9 1/1
Type: Rear Wheel
Rim Material: Alloy (reinforced)
Hub: Industry Nine (i9) 1/1
Axle: Boost (12x148 or 12x157)
Freehub: XD or MicroSpline
Intended Use: Downhill, freeride
Key Features
Reinforced spokes and rim profile for DH strength
i9 1/1 hub with 4° engagement
Modern Boost spacing (12x148 or 12x157)
Sold individually to allow front/rear tune
Stiff rear wheel for stability under load
Compatibility and Use
Fits downhill bikes with Boost rear spacing (12x148 or 12x157 depending on model). Choose the freehub (XD for SRAM, MicroSpline for Shimano) and axle size. Ideal for downhill racing, bike parks, and aggressive trail riding.
Price Value and Deal
At $98.38, this wheel is a fraction of its original price. It's a great opportunity to upgrade your DH bike without breaking the bank. Free shipping on orders over $45, and use coupon TOOLBOX15 for extra 15% off.
Features
Reinforced alloy rim and spokes withstand DH impacts.
i9 1/1 hub provides instant 4° engagement.
Massive savings: $314.11 (76% off) plus extra 15% off with coupon.
Hub: Industry Nine (i9) 1/1
Axle: Boost 12x148 / 12x157
Model: Synthesis DH Alloy i9 1/1
Freehub: XD / MicroSpline
Intended Use: Downhill
Product Type: Rear Wheel
Rim Material: Alloy
Seller: The Tool Locker
MPN: Synthesis DH Alloy i9 1/1
Product Details
Built for the Steep and Rough
Designed in partnership with YT Industries, this wheel is tested on the world's toughest downhill tracks. The reinforced rim and i9 hub handle big hits, while the stiff construction gives you precise control. At this price, it's a no-brainer upgrade.
Options and Fit
Select your axle and freehub to ensure compatibility. If you're unsure, check our size chart or contact support. This wheel is also available in a front version to complete your setup.
Frequently Asked Questions
Will this rear wheel fit Super Boost?
The standard model fits Boost (12x148) and some models are available for 12x157, but Super Boost (12x157) is not typically supported. Check our listing options to select the correct axle dimension for your bike.
What freehub bodies are available?
You can choose between SRAM XD and Shimano MicroSpline. Select the one that matches your cassette. The wheel does not come with an HG freehub in this model.
What is the engagement of the i9 1/1 hub?
The i9 1/1 hub has 4° engagement, giving 90 points of engagement for quick power transfer.
Where can I buy this wheel at a discount?
At The Tool Locker, this wheel is on sale for $98.38 (76% off). Use coupon TOOLBOX15 at checkout for an additional 15% off.
Is this wheel tubeless ready?
Yes, the rim is tubeless compatible, allowing you to run a tubeless setup for less flats and better traction.
4.2★★★★★★★★★★(5)
5 ★2
4 ★2
3 ★1
2 ★0
1 ★0
Customer Reviews
5
★★★★★★★★★★5.0
c*****m
Verified
Tough as nails
This wheel has taken a beating on the DH tracks. The i9 hub has instant engagement and the alloy rim has stayed true. Tubeless setup was straightforward. Highly recommend for anyone serious about downhill.
★★★★★★★★★★4.0
y*l
Verified
Reliable and smooth
Great wheel for the price. The i9 hub is buttery and the rim is sturdy. I've had a few hits and it's still true. Slightly heavy, but it's built to last. Would buy again.
★★★★★★★★★★3.0
t*****v
Verified
Good but hub is loud
The wheel is fine, but the i9 hub is extremely loud – not my style. Also, the rim took a dent after a big rock. But it held air and kept spinning. If you like hub buzz, it's great.
★★★★★★★★★★5.0
e*l
Verified
Endless engagement
The i9 hub is incredible – instant bite when you pedal. The alloy rim is solid, and the wheel feels planted on steep descents. Tubeless ready, which is a plus. Five stars.
★★★★★★★★★★4.0
u*r
Verified
Almost perfect
Very robust wheel, but the hex hub cap has a bit of play. Not a functional issue, but noticeable. Otherwise, the wheel performs brilliantly on the DH runs. Good value.