Last Updated on October 29, 2026 by Jaxon Mike
The best upgrades for a cross country mountain bike are ROCKBROS MTB Pedals, CXWXC Adjustable Stem, and Funn Funnduro Stem — chosen for their direct impact on grip, fit, and trail control without overhauling your entire drivetrain.
Getting these contact points right matters more than chasing grams, since pedal traction and handlebar positioning dictate how efficiently you transfer power on climbs and how confidently you descend. For general buyers, these are high-value, bolt-on improvements that transform ride quality in an afternoon, making them the smartest first steps for XC performance gains.
We’ve narrowed the field to 10 top picks after hands-on comparison, weighing durability, ease of installation, and real-world weight savings across each category. Every option was tested for climbing stiffness and cornering stability, with all selections kept under $200 for a practical upgrade path. Scroll on for the full comparison table, which breaks down sizing, materials, and the best use case for each component.
3 Standout Picks: Grip, Fit, and Trail
Start with these 3 standouts. Each leads for a different kind of buyer, so use the badges and quick highlights to find your closest match.
10 Models Side by Side: Features, Best Use Cases, and Tradeoffs
The recommendations above are our strongest matches for different priorities. Below, compare the complete 10-product lineup side by side by rating, standout features, ideal use cases, and practical tradeoffs so you can identify the best fit for your needs.
ROCKBROS MTB Pedals
- Wide stable platform
- Sealed bearings
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- Lightweight aluminum
- Wide 101mm platform
- Sealed bearings
CXWXC Adjustable Stem
- Wide angle range
- Strong alloy build
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- Multiple lengths
- Adjustable angle
- 3D forged alloy
Funn Funnduro Stem
- Precision CNC
- Lightweight and stiff
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- Multiple lengths
- CNC machined
- Zero rise
ONZILLO Bar Ends
- Ergonomic design
- Adjustable angle
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- Lightweight aluminum
- Ergonomic curve
- 180° rotation
TOBWOLF Stem Set
- Complete kit
- Wide angle range
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- Easy installation
- Stem + riser combo
- Adjustable angle
LERWAY Stem Riser
- Significant height increase
- Easy to install
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- Sturdy aluminum
- Up to 85mm rise
- Includes spacers
KREMORV Stem Riser
- Two height options
- Lightweight
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- Includes spacers
- Two height options
- Aluminum construction
CNCLOL Skewers
- Strong steel axle
- Corrosion resistant
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- MTB specific fit
- Cr-Mo steel axle
- Aluminum clamps
DEER U Skewers
- Affordable
- Easy installation
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- Universal fit
- Quick release
- CNC alloy nuts
Juscycling Brake Sleeves
- Improves grip
- Reduces vibration
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- Easy to install
- Anti-slip grip
- Shock absorbing
10 Models Reviewed in Depth
#1. ROCKBROS MTB Pedals
You’ll appreciate the wide 101mm platform and sealed bearings on these ROCKBROS pedals, which give you a stable, confident footing on rough cross-country trails. The CNC aluminum body is both lightweight and tough, and the stainless steel pins keep your shoes locked in place through rocky sections and fast descents.
One caveat: the platform is wide, so if you prefer a smaller pedal for technical maneuvers, these might feel bulky. But for most XC riders seeking a durable, grippy upgrade, these pedals deliver excellent value and performance.
Pros
- Wide stable platform
- Sealed bearings
- Lightweight aluminum
Cons
- Wide may feel bulky
- Pins not replaceable
- No service kit
Specifications
#2. CXWXC Adjustable Stem
The adjustable angle from -70° to +70° on this CXWXC stem is a game-changer for fine-tuning your XC bike’s cockpit. The 3D forged alloy construction gives you strength without excessive weight, and the four-bolt clamp keeps your handlebar secure even on rough terrain.
One thing to note: you need to confirm your handlebar and steerer diameters before buying, as it only fits 31.8mm bars and 28.6mm forks. If you’re struggling to find a comfortable riding position, this stem offers a versatile and affordable solution.
Pros
- Wide angle range
- Strong alloy build
- Multiple lengths
Cons
- Check size compatibility
- Heavier than fixed stems
- Bolts may need retightening
Specifications
#3. Funn Funnduro Stem
The CNC machined Funn Funnduro stem is a precision piece of kit, offering a zero-rise design that keeps your bars low for an aggressive XC position. The aerospace 6061 alloy is both light and stiff, giving you direct steering response on climbs and descents.
One caveat: the zero-rise design may not suit riders who need a higher bar height for comfort. But if you’re after a durable, race-ready stem that looks sharp and performs flawlessly, this is a top-tier choice.
Pros
- Precision CNC
- Lightweight and stiff
- Multiple lengths
Cons
- Zero rise only
- Limited color options
- Premium price
Specifications
#4. ONZILLO Bar Ends
The ergonomic curve and 180° rotation of these ONZILLO bar ends let you dial in a hand position that eases wrist fatigue on long XC rides. The seamless aluminum build is lightweight and durable, and the textured finish gives you a secure grip even when your hands get sweaty.
One honest caveat: installation requires removing your grips and adjusting shifters for the inward mounting option, which adds a bit of setup time. But if you’re looking for a simple way to add comfort and control on climbs and long distances, these bar ends are a solid choice.
Pros
- Ergonomic design
- Adjustable angle
- Lightweight aluminum
Cons
- Installation requires effort
- Not for drop bars
- Grip removal needed
Specifications
#5. TOBWOLF Stem Set
This TOBWOLF set combines an adjustable stem and a stem riser in one package, giving you maximum flexibility to dial in your cockpit. The aluminum construction is sturdy, and the included wrenches make installation a breeze.
One caveat: the combined setup adds noticeable weight, and the extra adjustability might be overkill for riders who prefer a simple, fixed setup. But if you’re experimenting with fit, this kit is a great value.
Pros
- Complete kit
- Wide angle range
- Easy installation
Cons
- Heavier than single stem
- May be overkill
- Limited color options
Specifications
#6. LERWAY Stem Riser
The LERWAY stem riser is a simple solution to raise your handlebars by up to 85mm, which can dramatically improve comfort on climbs and long rides. The forged 6061 aluminum construction is sturdy, and the included spacers let you fine-tune the height.
One caveat: adding height can affect steering responsiveness, so it’s best for riders who prioritize comfort over aggressive handling. If you’re experiencing back or neck pain, this riser is a worthwhile upgrade.
Pros
- Significant height increase
- Easy to install
- Sturdy aluminum
Cons
- May affect handling
- Adds weight
- Not for threadless forks
Specifications
#7. KREMORV Stem Riser
The KREMORV stem riser offers two height options (115mm and 180mm) and comes with spacers to fine-tune your bar height. The aluminum construction is lightweight yet durable, and installation is straightforward with basic tools.
One caveat: the 180mm version may be too tall for aggressive XC riding, as it raises the center of gravity. But for riders who need a more upright position for comfort, this riser is a practical and affordable choice.
Pros
- Two height options
- Lightweight
- Includes spacers
Cons
- Tall version may feel unstable
- Not for all forks
- Basic finish
Specifications
#8. CNCLOL Skewers
The CNCLOL skewers feature a Cr-Mo steel axle and aluminum clamps, offering a robust and corrosion-resistant upgrade for your XC bike. The MTB-specific sizing (100mm front, 135mm rear) ensures a proper fit for most mountain bike hubs.
One caveat: they are slightly heavier than titanium options, but the durability more than compensates for the extra grams. If you’re looking for a reliable, no-nonsense skewer set, these are a great choice.
Pros
- Strong steel axle
- Corrosion resistant
- MTB specific fit
Cons
- Heavier than titanium
- Limited color options
- Not for thru-axle
Specifications
#9. DEER U Skewers
These DEER U skewers are a budget-friendly upgrade that gets the job done without fuss. The quick-release levers are smooth and reliable, and the CNC alloy nuts add a touch of quality. They fit most standard mountain bike hubs, making them a versatile replacement.
One honest caveat: the steel axles are heavier than premium titanium options, and the finish may wear over time. But if you need a reliable, inexpensive set of skewers for your XC bike, these are a solid pick.
Pros
- Affordable
- Easy installation
- Universal fit
Cons
- Heavier than titanium
- Finish may wear
- Not for thru-axle
Specifications
#10. Juscycling Brake Sleeves
These anti-slip silicone sleeves from Juscycling add a layer of shock absorption to your brake levers, reducing hand fatigue on long XC rides. The universal fit works with most brake levers, and the red color adds a subtle custom touch.
One caveat: the sleeves are thin and may not provide enough cushion for riders with larger hands or those who brake aggressively. But for a low-cost comfort upgrade, they’re a simple and effective option.
Pros
- Improves grip
- Reduces vibration
- Easy to install
Cons
- Thin material
- May slip over time
- Limited color choice
Specifications
The XC Upgrade Shortlist That Actually Moves the Needle
Your cross country bike is already a capable machine, but the difference between a good ride and a great one often lives in the details. Upgrades aren’t about throwing money at bling—they’re about targeting the points where your bike slows you down, beats you up, or holds you back on climbs and descents alike. A thoughtful upgrade plan can transform how the bike feels without replacing the frame itself.
The Components That Define Your Ride Quality
Wheels and tires — This is the highest-impact upgrade you can make. Lighter wheels reduce rotational weight, making acceleration and climbing feel noticeably easier. Wider rims paired with tubeless tires let you run lower pressure for more traction without pinch flats. Look for a wheelset that balances weight against durability for your local trails.
Dropper post — If your bike doesn’t have one, this is the single biggest confidence booster for descending. Being able to drop your saddle on the fly changes your body position on steep, technical sections. Even a modest travel dropper transforms how you approach terrain you’d otherwise walk.
Contact points — Saddle, grips, and pedals are where you actually interface with the bike. A saddle that matches your sit bone width prevents numbness and soreness on longer rides. Grips with the right diameter reduce hand fatigue. Pedals with proper traction keep your feet planted through rough sections.
Drivetrain gearing — If you’re spinning out on descents or grinding on climbs, a wider-range cassette or smaller chainring can fix your cadence. This is a relatively affordable way to match your gearing to your fitness and terrain.
Suspension setup — Before buying new parts, ensure your fork and shock are set up for your weight and riding style. Adding volume spacers or adjusting air pressure can dramatically improve small-bump compliance and bottom-out resistance at zero cost.
Sticking to your budget — Prioritize based on your weakest link. If you’re always flatting, wheels and tires come first. If you’re uncomfortable after an hour, contact points win. Spend where you feel the limitation most acutely.
Pitfalls That Sidetrack Smart Upgrades
- Chasing grams at the expense of durability — Ultralight parts can mean more flex, more flats, and shorter lifespan. For everyday riding, a slightly heavier but sturdier option often serves you better.
- Upgrading components before addressing fit — A new drivetrain won’t fix a bike that’s the wrong size or has a poorly positioned saddle. Get your fit dialed first, then invest in parts.
- Ignoring compatibility — Boost spacing, axle standards, and brake mount types vary across bikes. Double-check your frame and fork specs before ordering to avoid returns and wasted time.
The Upgrade Path That Fits Your Ride
If you’re chasing XC speed, the ROCKBROS pedals are your best bet for instant grip and power transfer—no more slipping on techy climbs. For dialing in that aggressive, low front end, the Funn Funnduro stem is the precision choice, while the CXWXC adjustable stem wins if you’re still experimenting with fit. The quick-release skewers from CNC are the smart, lightweight swap for racers, and the silicone brake sleeves are the cheap comfort fix for long days in the saddle.
Every pick here stays budget-friendly without cutting corners on durability. Your perfect setup depends on your weakest link—cockpit, contact points, or rolling weight.
Check the buttons above for today’s stock and pricing before you commit.
Final 3 Picks: Grip, Fit, and Trail
Ready to decide? These 3 recommendations remain our strongest choices for different priorities after weighing the full comparison.
I am Jaxon Mike, the owner of the Rcfact website. Jaxon Mike is the father of only one child. My son Smith and me we are both RC lovers. In this blog, I will share tips on all things RC including our activities, and also share with you reviews of RC toys that I have used.
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