Tread Pattern
Three patterns, three jobs. Grappler is the do-everything aggressor. Grappler RS lives out back with bigger center knobs that bite hard under braking. Grappler TR is the one you run when the trail goes up before it goes down.
GEN3 TIRES + RADIAL OPTIONS
GRAPPLER
TIRES
Tire lineups got complicated. We designed Grappler to solve that. Pro-level traction across All-Mountain, Enduro, and DH disciplines. Now with radial options. Clear choices. Better tires.
3
Treads
3
Casings
2
Compounds
27.5 + 29
Sizes
3
Treads
3
Casings
2
Compounds
27.5 + 29
Sizes
Tire lineups got complicated. We designed Grappler to solve that. Pro-level traction across All-Mountain, Enduro, and DH disciplines. Now with radial options. Clear choices. Better tires.
Grip
can't
hide
from
Grappler.
Grip. It hides in every trail. Between the loose over hard. The wet. The roots. The same sections that catch you out, again and again. Grappler was designed to hunt it down. Three treads. Three casings. Two compounds. Now go find it.
Scroll
GRAPPLER
HUNT DOWN GRIPE-MTB RATEDFROM $59.953 TREADS3 CASINGS2 COMPOUNDS27.5 & 29 INCHRADIAL AVAILABLEMOTION POTIONWORLD CUP TESTED
The Setup
Simplified line.
Serious performance.
Every Grappler is defined by three choices. Get all three right and you'll have the fastest, most confident setup for your terrain.
Casing
The tread gets the credit. The casing does the work. Flux AM is light enough for the climb but won't fold on the way down. Flux GR is built for terrain that has it out for you. Flux GR Radial bends with the trail instead of arguing with it, finding grip in places other tires never knew existed.
Compound
MoPo, short for Motion Potion. Soft, tacky, 42a edge to edge. Run it once and you'll understand. Momentum is the everyday answer, with a harder center that doesn't disappear after a few rides and the same MoPo shoulders that still corner like race day.
THE LINEUP
CHOOSE YOUR GRAPPLER.
Three patterns. Five options. Each tuned for position, casing, and terrain.
Grappler
Most aggressive. 3-2-3 tread, tall side lugs, open knob layout.
Best For
Gravity, All-Mtn, E-MTB
Grappler Radial
Aggressive tread on a radial casing. More grip in loose, chunky terrain.
Best For
Gravity, All-Mtn, E-MTB
Grappler RS
Rear-specific. Taller center knobs and ramp angles for race-ready braking bite.
Best For
Gravity, E-MTB Rear
Grappler RS Radial
RS tread on a radial casing. Maximum rear traction with trail compliance.
Best For
Gravity, E-MTB Rear
Grappler TR
Trail-optimized. Low-profile center knobs for faster rolling with Grappler shoulders.
Best For
Trail, All-Mtn, Light E-MTB
CASING ARCHITECTURE
Engineered from
the inside out.
Three casings. Dual-ply across the line. Pick light, burly, or radial.
Trail / All-Mountain
Light where it matters.
90 TPI, 2-ply bias. Armor Weave sidewalls resist punctures without the weight penalty. Built for riders who climb as hard as they descend.
- Construction2-ply bias
- TPI90 TPI
- Under Tread6 biased plies
- Sidewall4+ Armor Weave
- WeightLightest
- Best ForTrail, All-Mountain, E-MTB
Enduro / DH
Built to take hits.
72 TPI dual-ply construction. GR Apex sidewall inserts for maximum support on bike park laps, enduro lines, and rock gardens.
- Construction2-ply bias (52°)
- TPI72 TPI
- Under Tread6 biased plies
- Sidewall4+ GR Apex inserts
- WeightMid
- Best ForBike park, enduro, DH racing
Enduro / DH Race
Stay planted. Push harder.
True radial plies run bead-to-bead at 65°. Bump compliance without the lateral wobble. Dual Apex inserts fix what other radials get wrong.
- Construction2-ply radial (65°)
- TPI72 TPI
- Under Tread6 radial plies
- Sidewall4+ Dual Apex inserts
- WeightMid-Heavy
- Best ForWorld Cup DH/Enduro race
MoPo
Momentum
CASING INNOVATION
Why radial?
Bias-ply casings fight the trail with stiff plies that transmit every hit and wear you out. Flux GR Radial flexes with the ground instead of against it, shallow-angle plies running bead to bead for more grip, more control, and less fatigue.
Standard vs Radial.
Compare construction, sidewall behavior, and ride quality side by side. Pick the casing that matches your terrain and priorities.
Standard
Flux GR
- ConstructionCross-ply bias (52°)
- SidewallStiffer, more lateral support
- Bump complianceLess conformity
- Cornering feelDirect, edgy transitions
- FatigueHigher on long descents
- Optimal PSIStandard
Radial
Flux GR Radial
- ConstructionRadial bead-to-bead (65°)
- SidewallMore compliant, absorbs impacts
- Bump complianceConforms to terrain, less chatter
- Cornering feelSmoother, more planted
- FatigueReduced arm pump
- Optimal PSI0-15% higher depending on terrain
COMPOUNDS
Two compounds.
Zero compromises.
Motion Potion
Maximum grip. Period.
We call it Motion Potion. Try it once and the grip becomes an addiction. Full 42a durometer across the entire tread. Tacky, slow-rebound rubber that finds grip where other compounds give up.
Gravity racing. Loose conditions. Wet conditions. Extract every ounce of traction.
- Hardness42a uniform (Supersoft)
- Center42a
- Shoulder42a
- Comparable ToMaxxis MaxxGrip, Schwalbe UltraSoft
- Best ForDH race, front, wet and loose
- DurabilityModerate
Dual Compound
Most of the grip. More of the lifespan.
You could call it MoPo Lite, but it's heavy on durability. 50a center tread that shows up to work day after day. 42a shoulders still corner like race day.
Trail & E-MTB. When you want grip that goes the distance.
- Center Hardness50a (Soft)
- Shoulder Hardness42a MoPo (Supersoft)
- Comparable ToMaxxis MaxxTerra, Schwalbe Soft
- Best ForTrail, E-MTB, rear, long stages
- DurabilityHigh
Rubber Hardness Scale
Supersoft
Soft
Intermediate
Hard
FIND YOUR SETUP
Dialed for your terrain.
Tires are personal. These are the pairings we'd hand to most riders as a starting point. The whole lineup is built to mix and match, so swap fronts and rears until you land on what your trails reward.
Enduro / DH Racing
Stage wins, long descents, consequence terrain.
Bike Park / Shuttle
Park laps where a puncture ends your day.
Trail / All-Mountain
All-day efficiency without losing the corners.
E-MTB
Heavier bikes, more torque. Built for both.
Enduro / DH Racing
Stage wins, long descents, consequence terrain.
We recommend this for racers chasing maximum grip on long, high-consequence descents. The radial casing absorbs trail chatter so your hands stay fresh deep into the stage.
We recommend this for riders who want a stiff, direct feel under hard cornering and braking. The bias casing holds its shape through big hits without giving up edge bite.
Front
Grappler Radial MTB Tire
Rear
Grappler Radial MTB Tire
Front
Grappler MTB Tire
Rear
Grappler RS Rear MTB Tire
Bike Park / Shuttle
Park laps where a puncture ends your day.
We recommend this for riders putting in shuttle days and bike park laps, where pinch flats and sidewall cuts end the session early. The reinforced casing front and rear takes repeated big-line abuse.
We recommend this for riders who want radial compliance on the front for confidence on the entry, paired with a tougher, faster-rolling rear that holds up to park days.
Front
Grappler MTB Tire
Rear
Grappler MTB Tire
Front
Grappler Radial MTB Tire
Rear
Grappler MTB Tire
Trail / All-Mountain
All-day efficiency without losing the corners.
We recommend this for trail riders who want serious grip up front without paying for it on the climbs. The Flux AM casing keeps things light while still standing up to the descents.
We recommend this for riders chasing all-day efficiency. Balanced grip and rolling speed front and rear keeps you fast on the climbs without losing confidence in the corners.
Front
Grappler MTB Tire
Rear
Grappler TR MTB Tire
Front
Grappler TR MTB Tire
Rear
Grappler TR MTB Tire
E-MTB
Heavier bikes, more torque. Built for both.
We recommend this for e-bike riders whose extra torque chews through casings. The Momentum rear lasts longer under power, and the front compound holds up to the added bike weight on the descents.
We recommend this for E-MTB riders who want radial compliance up front for confidence on the entry, paired with a fast-rolling RS rear that delivers braking bite under torque.
Front
Grappler MTB Tire
Rear
Grappler MTB Tire
Front
Grappler Radial MTB Tire
Rear
Grappler RS Rear MTB Tire
THE FULL RANGE
COMPARE GRAPPLER
TIRE MODELS.
| Model | Casing | Compound | Size | Best For | Weight | Price | |
|---|---|---|---|---|---|---|---|
|
Grappler
| Flux AM | MoPo | 29"×2.5", 27.5"×2.5" | Gravity, All-Mtn, E-MTB | 1255–1305g | $59.95 | |
|
Grappler
| Flux AM | Momentum | 29"×2.5", 27.5"×2.5" | Gravity, All-Mtn, E-MTB | 1255–1305g | $59.95 | |
|
Grappler
| Flux GR | MoPo | 29"×2.5", 27.5"×2.5" | Gravity, All-Mtn, E-MTB | 1445–1520g | $69.95 | |
|
Grappler
| Flux GR | Momentum | 29"×2.5", 27.5"×2.5" | Gravity, All-Mtn, E-MTB | 1445–1520g | $69.95 | |
|
Grappler
| Flux GR Radial | MoPo | 29"×2.5", 27.5"×2.5" | Gravity, All-Mtn, E-MTB | 1425–1510g | $79.95 | |
|
Grappler
| Flux GR Radial | Momentum | 29"×2.5", 27.5"×2.5" | Gravity, All-Mtn, E-MTB | 1425–1510g | $79.95 | |
|
Grappler RS
| Flux GR | MoPo | 27.5"×2.4" | Gravity, E-MTB Rear | 1460g | $69.95 | |
|
Grappler RS
| Flux GR Radial | MoPo | 27.5"×2.4" | Gravity, E-MTB Rear | 1460g | $79.95 | |
|
Grappler RS
| Flux GR Radial | Momentum | 27.5"×2.4" | Gravity, E-MTB Rear | 1460g | $79.95 | |
|
Grappler TR
| Flux AM | Momentum | 29"×2.4", 27.5"×2.4" | Trail, All-Mtn, Light E-MTB | 1255–1310g | $59.95 |
GRIP MORE.
PAY LESS.
QUESTIONS ANSWERED
FAQ
MoPo for maximum grip. Ideal for front tires, wet conditions, and DH racing. Momentum for trail, E-MTB, or when you want grip that lasts longer. Momentum delivers ~85% of MoPo's max cornering grip thanks to its 42a MoPo shoulder knobs.
Grappler is the most aggressive, front and rear, engineered for steep, technical terrain. Grappler RS is rear-specific with taller center knobs for maximum braking bite on long race stages. Grappler TR is the trail-optimized tread with lower-profile center knobs for faster rolling while preserving Grappler cornering grip.
Flux GR is a dual-ply bias construction with stiff sidewalls and direct cornering feel. Flux GR Radial uses shallow-angle plies running bead-to-bead for superior bump compliance and less arm pump. Dual Apex inserts solve the lateral stability trade-off typically found in competitor radial tires.
Generally, yes, but it depends. Our radial tires require less pressure than our competitors' tires. Our radial tires conform differently to the ground and perform best at approximately 0-15% higher PSI than traditional bias-ply tires, depending on the terrain. This higher pressure, combined with reduced internal friction, results in less rolling resistance and increased speed.
Absolutely. The lineup is designed to mix and match. Many riders run a more compliant casing up front and a more supportive casing in the rear, or pair a Radial front with a bias-ply rear. See the Setup section for common pairings.
Yes. The Momentum compound and Flux GR casing are specifically designed to handle the torque and wear demands of E-MTB riding without sacrificing grip.
The open-knob tread design clears debris quickly and maintains traction in wet, loose, and muddy conditions. MoPo compound stays grippy when things get slick.
Grappler tires are optimized for internal rim widths of 30–35mm, the standard range for modern trail, enduro, and DH wheels.
Yes. All Grappler tires are tubeless-ready out of the box. Pair with a quality tubeless rim, valve, and sealant for the best performance.
GRAPPLER TIRES
GRIP. DURABILITY. PRICE. PICK ALL THREE.
Pro-level traction across All-Mountain, Enduro, and DH. Available in three treads, three casings, and two compounds. Radial options included.
From $59.95