Built for the Trail. Built to Last.
Maximum Efficiency - Up to 700 Miles per Waxing - Less Wear, Fewer Replacements
Collections
Featured Products
Cycling Components That Don’t Quit—Because You Don’t Either
At Rotation Engineering, we build cycling components the right way—no compromises, no shortcuts. With over 20 years of experience in Formula 1 and motorsports engineering, we apply precision to the parts that matter most.
Precision-Machined. Rider-Tested. Race-Proven.
- Machined to tolerances of +/- 0.0001″
- Engineered for 10x the stress loads of standard cycling parts
- Designed in-house in Ellington, CT
We ride, we test, we refine, so you can ride harder, longer, and with total confidence.
Lubricants Designed for the Extremes
Unlike large-scale manufacturers, we are able machine our bottom components to exacting standards—from gritty gravel to the worst mud.
Because Every Pedal Stroke Should Count
- Enthusiasts who simply want the best
- Competitive racers chasing podiums
- Long-haul riders demanding longevity
Join a community of serious cyclists who refuse to settle.
I finally got to ride my hightower today, broke my foot in June and haven’t been allowed/able to ride it since. Your BB is the smoothest one I’ve ever ridden, and I had 3 Enduro XD-15 and Wheels Manufacturing BBs. Nice job!
I’ve worked with these BBs since the first prototypes: silky smooth and outlast the rest
Smoothest and most durable BB on the market…period.
Chain Waxing System
Built for serious riders who demand elite drivetrain performance, the Rotation Chain Waxing System delivers professional-grade chain treatment rooted in motorsports engineering.
Learn more
Extremely long-lasting
Proprietary blend that helps with particle suspension, creating a durable, more cohesive mixture.
Thoughtful design
Precision-fit hanger system to eliminate mess and simplify drying.
Premium materials
Custom-designed wax bath system for optimal chain immersion.
½ lb
of Proprietary Hot Melt Chain Lube
3 Sizes
of Nano-scale, Friction-reducing Additives
About us
Long before our name was etched on a bottom bracket, we were building championship-grade components for motorsports.
Motorsports Precision, Applied to Cycling
We design, test, and refine our products to world cup standards — ensuring that every watt of your effort translates to motion, not friction.
Race Day. Race Weight. No Compromise.
The RaceLab CX35 is a purpose-built tubular carbon fiber wheelset engineered for the demands of elite cyclocross. Light, responsive, and structurally precise, the CX35 is designed for racers who measure their season in barriers cleared, run-ups conquered, and the seconds gained when the course turns technical.
A 35mm rim depth strikes the optimal balance for cyclocross — shallow enough to remain composed in headwinds and crosswinds along open sections, deep enough to maintain speed through power stretches. Paired with a tubular tire system, the CX35 delivers the unmatched grip, low rolling resistance, and pinch-flat resistance that define top-level cross wheels.
Advanced Carbon Architecture
Constructed from high-modulus carbon fiber, the CX35 achieves a class-leading set weight of 1150g (±40g) — the lightest wheelset in the RaceLab lineup. The layup schedule is engineered for explosive responsiveness, maximizing lateral stiffness for sprint-out-of-the-saddle accelerations and the relentless pace changes of a 60-minute race.
Each rim is dynamically balanced during manufacturing, ensuring harmonized rotation at race pace and consistent performance lap after lap.
Hand Built. Precision Assembled.
Every RaceLab CX35 wheel is hand built in-house by experienced wheel technicians using only the highest quality components. Spoke tension is meticulously measured and balanced to exact tolerances, ensuring structural uniformity, long-term reliability, and consistent performance under race-level loads.
This deliberate, hands-on assembly process allows each wheelset to meet exacting standards of trueness, roundness, and tension balance — delivering a ride quality that is both precise and enduring.
Structural Reinforcement, Intelligently Applied
The variable-thickness nipple bed reinforces the spoke interface — the highest stress zone within any performance wheel. By increasing material only where required, durability is enhanced without compromising weight targets. This precision allocation of carbon ensures long-term structural integrity while preserving the lightweight character demanded by competitive riders.
Tubular Performance
The tubular rim bed is engineered for secure tire bonding and a clean, optimized profile. With a 28mm width, the CX35 is shaped to support the wide cyclocross tubulars favored by elite racers — delivering exceptional cornering grip, mud-shedding tread engagement, and the supple ride quality that only a properly mounted tubular can provide.
Performance Defined
- 35mm carbon rim profile
- Tubular-only — maximum traction and pinch-flat resistance
- 28mm rim width — built for cyclocross tubulars
- High-modulus carbon construction
- Precision-balanced rim architecture
- Hand built in-house to exact tolerances
- Reinforced variable-thickness nipple bed
- Verified set weight: 1150g (±40g) — the lightest in the RaceLab range
The RaceLab CX35 is engineered for the rider who treats race day as the only metric that matters. It is a wheelset built for podiums.
Specifications
Depth: 35mm
Rim Type: Tubular only
Spoke Count: 24h
Width: 28mm
Spokes: DT Swiss Aerolite straight-pull bladed
Nipples: DT Swiss Squorx
Set Weight: 1150g (±40g)
ERD: 569
Offset: 0
Hub Options: Rotation Engineering Axis Pro ($1950) | DT Swiss 240 ($2250)
Driver Options: HG11, XDR, Microspline
Axle Standards: 142x12 / 100x12
Rotor Mount: Centerlock
Highly Refined Tools for Relentless Performance
Have a question ? We are here to help.
Check out the most common questions our customers asked. Still have questions ? Contact our customer support.
What are your BB cups made out of?
Our Bottom Bracket cups are made using aircraft-grade 7075 aluminum alloy or Grade 5 Ti-6Al-4V titanium.
Why should I pay extra for ceramic hybrid bearings?
Ceramic hybrids roll faster, are more corrosion resistant, and pulverize small amounts of contaminants in the raceways.
Why choose titanium for a BSA cup over aluminum alloy?
Titanium is significantly stronger than aluminum alloy. BSA cups have limited material where the cup flange meets the threaded part of the Bottom Bracket cup, so material strength is key. Titanium offers more stiffness and resistance to misalignment than aluminum alloy. Titanium is also extremely corrosion resistant even without anodizing, and they look damn sexy, too.
What’s the deal with the hot dip chain wax?
Our proprietary wax hot melt is a custom mix of three different nano scale dry lube additives. In crafting our wax, our goal was to save between 5-8 watts over traditional wet lubes, achieve better adherence, and offer better longevity and value than our competition.
What’s the deal with the coated bearings?
We offer a proprietary NanoGliss Race Coating, that is ultra hard, corrosion resistant, wear resistant. These bearings will roll faster, and last longer than the competition.
Does your hot melt wax lube contain PTFE or PFAS?
Heck no!
How do you recommend melting the wax?
You should use only dedicated wax melters to melt your hot wax lube and always follow the manufacturer’s directions. We offer a full wax station, that even includes wax to get you started.
What Bottom Bracket standards do you make?
We currently make BSA MTN, BSA road, and t47 internal road. We also make spindle reducers for 24mm and 29mm spindles. Additionally, 30mm spindles fit directly in our Bottom Brackets without a reducer.