TBparts Suspension Kits
Stop Fighting
Stock Suspension.
Upgrade It.
Complete fork and rear shock packages for the Honda CRF110, Kawasaki KLX110 & KLX110L, Kawasaki KLX140, and Yamaha TTR110. Built for adult riders. Matched to your exact weight.
Fitment guaranteed by model
Free shipping over $75
DNM shocks built to TBparts spec
20+ years in mini-moto
Why You're Here
Why Stock Suspension Fails Adult Pit Bike Riders
Factory suspension on the Honda CRF110F, Kawasaki KLX110, KLX140, and Yamaha TTR110 is engineered for riders under 120 lbs — children and lighter teens on gentle terrain. For adult riders, the problems show up immediately.
Rear shock bottoms out
On anything larger than a small jump or a rough landing, the rear shock hits the bump stop. You feel every impact directly through the frame.
Excessive fork dive under braking
Stock fork springs are too soft for adult weight. The front end plows into corners, pushing and losing line under braking loads.
Pogo-stick rebound
Underdamped forks bounce unpredictably at speed. The bike feels nervous and uncontrolled at anything above slow trail pace.
Lap times suffer
You can't ride the bike confidently when you're fighting the suspension. Correct spring rate and damping control is the highest-ROI upgrade available.
The fix is not complicated. Stock suspension uses spring rates that are far too soft for adult body weights. Installing the correct spring rate — matched to your specific weight and your specific bike model — transforms how these bikes handle. This is the single most impactful upgrade available for the CRF110, KLX110, KLX140, and TTR110.
Technical Guide
How to Choose the Right Spring Rate for Your Pit Bike
Spring rate is measured in pounds per inch (lbs/in) — the force required to compress the spring one inch. For CRF110, KLX110, KLX140, and TTR110 riders, the correct spring rate is determined primarily by rider body weight. Choosing one step off in either direction meaningfully impacts ride quality and control.
250#
Riders under 160 lbs
Light spring rate. Supple, planted feel for lighter adults on trail, casual, and backyard use. Correct for CRF110, KLX110L, and TTR110 at lighter weights.
Most popular
300#
160 – 220 lbs
The sweet spot for most adult pit bike riders. Balances comfort with performance for trail, casual, and competitive riding. Our most sold spring rate across all models.
350#
220+ lbs
Firm, controlled ride for heavier riders. Prevents bottoming on larger jumps and under race loads. Correct for CRF110, KLX110L, and KLX140 at heavier weights.
Spring Rate Selection by Model
Use this reference to quickly match spring rate to your bike and weight. All kits are available via the configurator below.
| Spring Rate | Rider Weight | Honda CRF110 | Kawasaki KLX110 / 110L | Kawasaki KLX140 | Yamaha TTR110 |
|---|---|---|---|---|---|
| 250# | Under 160 lbs | ✓ Available | ✓ Available | — | ✓ Available |
| 300# ★ | 160 – 220 lbs | ✓ Best seller | ✓ Best seller | ✓ Available | ✓ Best seller |
| 350# | 220+ lbs | ✓ Available | ✓ Available | 450# available | 300# max |
★ The 300# rate is TBparts' most-purchased spring rate across all suspension kits, accounting for the majority of kit sales.
OEM Forks vs. TBparts Fork Assembly
A direct comparison of what stock suspension offers versus what TBparts delivers.
Stock OEM Forks
Springs tuned for 100–120 lb riders
No internal bushing/guide (KLX110L)
Non-ported damping rods
Stock travel — no increase
OEM replacement cost: $660+
No preload adjustability
TBparts Fork Assembly
Weight-matched spring rates: 250# / 300# / 350#
OEM-style internal bushing integrated for strength
Ported damping rods matched to HD springs
+40mm travel increase (CRF110) / +10mm (KLX110)
Starting at $245 — fraction of OEM cost
Fork preload adjusters included (select models)
Suspension Finder
Find Your Exact Kit in 30 Seconds
Select your bike and rider weight. We'll match you to the right spring rate and show you a direct Add to Cart link.
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Your Bike
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Rider Weight
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Your Kit
What bike are you riding?
Select your model. We'll match suspension built for your exact fitment.
What's your rider weight?
Spring rate is calibrated to your body weight — this is the most critical variable for suspension performance.
160
lbs
→ Recommended: 300# spring
80120160200240280+
250#Under 160 lbsLight
300#160–220 lbsStandard
350#220+ lbsHeavy
Your Match
300# Spring Kit — Honda CRF110
Recommended kits for your setup
Shop by Model
Suspension Kits by Bike Model
Every kit is engineered specifically for its platform. Select your model to see the full range of available spring rates and packages.
Honda CRF110F Suspension Kits
The Honda CRF110F is TBparts' top-selling suspension platform. Our fork assemblies are built with ported damping rods, OEM-style internal bushings for added strength, and +40mm of additional travel over stock — delivering real front-end control for adult riders. Every DNM rear shock is manufactured to TBparts specifications and fits all CRF110F model years without frame modification.
- +40mm travel over stock OEM forks
- HD springs: ~2× stiffer than factory
- OEM-style internal bushing — not on stock forks
- Ported damping rods matched to spring rate
- 2019+ fitment: no grinding or modification required
- TiN (titanium nitride) coated uppers available
- Ships with 15wt fork oil — refill with 5.5oz 20wt for best performance
- OEM fork replacement cost: $660+. TBparts starting at: $245.
1,000+
Riders upgraded with TBparts CRF110 suspension kits
+40mm
Added suspension travel vs stock CRF110 forks
TB Suspension Kit #300 — CRF110
Our most popular CRF110 package. Complete front and rear suspension upgrade at the 300# spring rate — the sweet spot for adult riders 160–220 lbs. Includes fork assembly with ported rods and DNM rear shock built to TBparts spec.
TB Suspension Package, 250# — CRF110
Complete fork and rear shock at the 250# spring rate. Correct for CRF110 riders under 160 lbs. Supple, planted ride for trail and casual use.
TB Suspension Package, 350# — CRF110
Heavy-duty 350# spring for CRF110 riders over 220 lbs. Prevents bottoming under load on jumps and aggressive riding.
TB Forks, TiN Uppers + 300# DNM Shock — CRF110
Gold titanium-nitride coated fork uppers + matched 300# DNM shock. Reduced friction, harder surface, race-ready aesthetics. The premium full package.
TB Fork Assembly Set — All CRF110
Standalone fork upgrade. Gloss black with TB cast logo. HD springs, ported rods, OEM-style bushing. Pair with a DNM shock for a complete setup.
TB Wheel Assembly Set, HD Rims — CRF110
HD aluminum rims, oversized stainless spokes, aircraft-grade 7050 aluminum rims, NTN bearings. Complete the suspension build with a matching wheel upgrade.
Complete your CRF110 build
Riders who buy a CRF110 suspension kit frequently also upgrade to the TB 143cc Big Bore Kit + 20mm Carb — the most popular engine add-on for CRF110 performance builds.
Kawasaki KLX110 & KLX110L Suspension Kits
The KLX110 and KLX110L are TBparts' most popular suspension platform — the go-to pit bike in flat-track racing. Our fork assemblies add +10mm of travel over stock, feature ported damping rods, and include an integrated OEM-style bushing that the stock KLX110L forks lack. Every rear shock is DNM's MK-AR series with adjustable rebound.
- +10mm travel increase over stock KLX110L
- Integrated OEM-style bushing — not present on stock forks
- Ported damping rods for improved rebound and compression
- 250# rate: under 165 lbs (trail or light aggressive riding)
- 300# rate: most adult flat-track and pit bike racers 160–220 lbs
- 350# rate: riders over 220 lbs or aggressive jump riding
- OEM KLX110 fork replacement: $600+. TBparts starts at: $239.
#1
TBparts' most-sold suspension platform — KLX110 leads all models
TB Suspension Package #5 — KLX110
The most popular KLX110 kit. Proven across flat-track and pit bike race circuits. Complete front and rear upgrade at the 300# rate for adult riders 160–220 lbs.
TB Suspension Package, 250# — KLX110L
Correct for KLX110 riders under 165 lbs. Supple, planted ride for trail and casual riding. Complete front and rear package.
TB Suspension Package, 350# — KLX110L
Heavy-duty 350# setup for KLX110L riders over 220 lbs or aggressive racers who need to prevent bottoming on the track.
TB Fork Assembly Set, HD Springs — KLX110 & KLX110L
Standalone fork upgrade for the KLX110 and KLX110L. Ported rods, HD springs, OEM-style bushing. Pair with a DNM shock to complete the build.
DNM Rear Shock, 300LB — KLX110L and CRF110
DNM MK-AR 300# rear shock with adjustable rebound. Bolt-on for KLX110L and CRF110. Great starting point if you're upgrading rear-first.
TB Wheel Assembly Set, HD Rims — All KLX110
HD aluminum rims with upgraded spokes for the KLX110. Complete the suspension build with matching performance wheels.
Complete your KLX110 build
The TB 143cc Big Bore Kit with VM26 Carb is the most popular engine upgrade for KLX110 suspension buyers — the most common next step after a suspension upgrade.
Kawasaki KLX140 Suspension Upgrades
The KLX140 R and L demand suspension matched to their performance. TBparts offers a graduated upgrade path — from the proven HD shock and fork spring package for a reliable, no-fuss improvement, to the fully adjustable rear shock with preload and rebound control for riders who want trackside tunability.
- HD shock and fork springs: non-adjustable, proven performance upgrade
- Adjustable rear shock: full preload and rebound adjustability
- 450# option available for riders over 220 lbs
- Bolt-on fitment for KLX140 R and L all years
3
Kit options — HD, adjustable, and 450# heavy-rider upgrade
Adjustable Rear Shock & Fork Springs — KLX140 R & L
Fully adjustable rear shock with upgraded fork springs. Dial in your preload and rebound on the track. The most versatile KLX140 suspension upgrade available.
HD Rear Shock & Front Fork Springs — KLX140 R & L
Non-adjustable HD setup. Proven, reliable KLX140 upgrade for riders who want improved suspension without the added complexity of adjustability.
Adjustable Shock 450# & Fork Springs — KLX140 R & L
High-rate 450# adjustable shock for KLX140 riders over 220 lbs or aggressive riders who need maximum firmness and bottoming resistance.
Complete your KLX140 build
The TB 26mm VM26 Carb Kit is the most popular upgrade for KLX140 suspension buyers — pairs perfectly with a suspension upgrade for a complete performance build.
Yamaha TTR110E Suspension Kits
The Yamaha TTR110E has a loyal rider base and the same fundamental suspension weakness as all Japanese mini-motos: springs tuned for lighter riders. TBparts TTR110 kits replace the front forks and rear shock with a weight-matched package that transforms the bike's handling for adult and performance use.
- Complete front and rear upgrade — forks and rear shock
- 250# rate: correct for TTR110 riders under 160 lbs
- 300# rate: most popular for adult TTR110 riders 160–220 lbs
- TiN coated fork option available
- Bolt-on fitment all TTR110E years
250#
Starting spring rate — TTR110 kits available in 250# and 300#
TB Suspension Kit, 300LBS — TTR110
The most popular TTR110 suspension kit. The 300# spring rate is the sweet spot for most adult TTR110 riders — great for trail, backyard tracks, and weekend racing.
TB Suspension Kit, 250LBS — TTR110
Correct for TTR110 riders under 160 lbs. Supple, comfortable setup that transforms the stock bike's feel on trail and backyard tracks.
Complete your TTR110 build
The TB 130cc Big Bore Kit is the most popular engine upgrade for TTR110 suspension buyers — commonly purchased together for a complete performance transformation.
4
Bike models with dedicated kits
4
Models covered — CRF110, KLX110, KLX140, TTR110
300#
Most sold spring rate across all models
20+
Years in mini-moto performance parts
Common Questions
Suspension FAQ
Everything you need to know about choosing, buying, and installing a TBparts suspension kit.
What is the best suspension upgrade for the Honda CRF110F?
The most effective CRF110F suspension upgrade is a complete fork and rear shock kit matched to the rider's weight. TBparts offers three spring rate options — 250#, 300#, and 350# — depending on whether the rider weighs under 160 lbs, between 160 and 220 lbs, or over 220 lbs. The TB Suspension Kit #300 for CRF110 is the most popular choice for adult riders. It includes a fork assembly with ported damping rods, heavy-duty springs, and +40mm of travel, paired with a DNM MK-AR rear shock built to TBparts specifications. OEM fork replacement parts cost over $660 — the TBparts kit starts at $245.
Is the stock KLX110 suspension adequate for adult riders?
No. The stock Kawasaki KLX110 and KLX110L suspension is tuned for lighter riders and will bottom out under most adult body weights. The stock rear shock uses a spring rate that is too soft for riders over approximately 130 lbs. TBparts, BBR Motorsports, and other specialists consistently recommend upgrading to an aftermarket fork and shock combination with an appropriate spring rate as the single most impactful modification for adult KLX110 riders.
What spring rate do I need for the Kawasaki KLX110?
For the Kawasaki KLX110 and KLX110L, TBparts recommends: 250# for riders under 165 lbs (or cautious trail riders), 300# for most adult riders between 160 and 220 lbs — this is the most commonly purchased rate for flat-track and competitive pit bike racing — and 350# for riders over 220 lbs or those who ride aggressively with large jumps. The 300# Suspension Package #5 for KLX110 is TBparts' most popular KLX110 kit.
What is the difference between the 250#, 300#, and 350# spring rates?
Spring rate is measured in pounds per inch (lbs/in) — the force required to compress the spring one inch. A 250# spring compresses more easily and suits lighter riders under 160 lbs. A 300# spring is stiffer and suits most adult riders between 160 and 220 lbs. A 350# spring is designed for heavier or more aggressive riders over 220 lbs, or those who frequently jump and need to prevent bottoming under hard landings. Choosing the wrong rate — even one step off — significantly impacts ride quality and control.
Will TBparts suspension kits fit all CRF110 model years?
Yes. TBparts suspension kits are designed to fit all Honda CRF110F model years. For 2019 and later models, the rear DNM shock is specifically designed to avoid the frame modification required by some competing shocks — it bolts on without grinding. Fork assemblies fit all CRF110F years and include all required hardware.
What is TiN (titanium nitride) coating on fork uppers?
Titanium nitride (TiN) coating is a surface treatment applied to the upper fork tubes. It reduces sliding friction, increases surface hardness, and provides corrosion resistance. TBparts TiN-coated fork assemblies feature gold-colored upper tubes and deliver improved fork action and longevity compared to non-coated alternatives. TiN-coated fork kits are available for the CRF110 and KLX110 at a price premium over standard black fork assemblies.
Can I install TBparts suspension kits myself?
Yes. TBparts suspension kits are designed for bolt-on installation by riders with basic mechanical skills. No frame grinding or modification is required for any current model year. Fork kits ship with 15wt fork oil; for best performance refill with 5.5oz of quality 20wt oil. Re-torque axle nuts after 15 minutes of riding: 32 ft-lbs front, 47 ft-lbs rear with blue thread-lock on the rear.
How much does a CRF110 suspension upgrade cost?
TBparts CRF110 suspension kits range from $245 for a fork-only upgrade to $1,050 for the Ultimate Gold Suspension and Wheel Package. Complete front and rear kits (fork assembly + DNM rear shock) range from $362 to $479 depending on spring rate and fork specification. Individual DNM rear shocks start at approximately $168. By comparison, OEM Honda fork replacement parts cost over $660 for a complete set.
Can I use a CRF110 suspension kit on a KLX110?
No. TBparts suspension kits are model-specific. The fork geometry, axle diameter, triple clamp dimensions, and shock mounting points differ between the Honda CRF110F and the Kawasaki KLX110/KLX110L. Attempting to cross-fit suspension components between these models will result in fitment issues and safety risks. Each TBparts kit is engineered for one specific model.
What upgrades pair well with a suspension kit?
The most commonly purchased upgrade alongside a TBparts suspension kit is a big bore engine kit. For the CRF110, the TB 143cc Big Bore Kit with 20mm Carb is the top-selling complement. For the KLX110, the 143cc Big Bore Kit with VM26 Carb is most popular. For the TTR110, the TB 130cc Big Bore Kit is the standard pairing. Riders focused on flat track also commonly add the TB Performance Exhaust and billet controls at the same time.
Ready to Upgrade?
The Right Suspension Is 30 Seconds Away
Use the suspension finder above or browse by model. Fitment is guaranteed by bike model — if your kit doesn't fit, we'll make it right.