Topline Performance Products Your Top Source For Everything Off-Road.

who we are

welcome

we aretopline performance productsA marketplace for enthusiasts,
by enthusiasts

We started as a small brick-and-mortar store in the Inland Empire, California, driven by a shared passion for powersports and engine building. Our team came together with a common goal—creating a better experience for enthusiasts of all levels, from beginners to experts.

Originally, we launched this site to offer our engine rebuilding services, and while we still provide them, we soon realized that the world of rebuilt engines is vast. There are production-line machine shops, custom modification specialists, certified remanufacturing facilities, and even skilled individuals—some retired—who bring years of experience to the craft.

We also found that replacement parts vary greatly in quality, from superior aftermarket upgrades to subpar junk. Anyone in the powersports world knows that things break... and sometimes, they blow up. Instead of just selling our own engines, we built a marketplace that provides all the options—helping you compare builders, pricing, quality, warranties, turnaround times, and core return policies.

We’ve been busy gathering data to help you make informed decisions:

What does each builder consider a "rebuilt" or "remanufactured" engine?
What parts are replaced vs. reused?
What modifications are available?
How long does the process take?
What are the warranty terms and coverage?

In the future, we plan to incorporate real customer feedback and build a service provider map—connecting you with professionals who can assist with engine removal and installation.

At Topline Performance Products, we don’t just sell engines—we give you the tools, knowledge, and options to find the right solution for your ride.

corey k - topline industries

hot products

View the hottest items people have been purchasing lately.

Brand: Shinko

★ ★ ★ ★ ★

Tire 005 Advance Rear 240/40r18 79v Radial Tl

Large block type tread pattern with excellent braking, cornering and acceleration characteristics.

$209.99

Brand: Giant Loop

★ ★ ★ ★ ★

Armadillo Liquid Reservoir Bag 5 Gal

Flexible, collapsible, lightweight, expedition-ready utility bladders for the safe transport and storage of liquid hydrocarbon products and other powersports and automotive fluids, available in 1-, 2-, 3- and 5-gallon sizes.Working in collaboration with start-up brand armadillo...

$131.99

Brand: Giant Loop

★ ★ ★ ★ ★

Armadillo Liquid Reservoir Bag 1 Gal

$83.99

Brand: Giant Loop

★ ★ ★ ★ ★

Armadillo Liquid Reservoir Bag 3 Gal

$103.99

New

Brand: SENA

★ ★ ★ ★ ★

Cavalry 2 Half Helmet Matte Black Lg

Cavalry 2 Smart half helmet features a?new robust form of self healing wireless communication.?Mesh Intercom*??technology?allows users to pair with the?touch of a single button, enjoying?an extremely robust and flexible?connection. When...

$349.00

Brand: Strider

★ ★ ★ ★ ★

14x Easy Ride Pedal Kit

$89.99

Brand: Alpinestars

★ ★ ★ ★ ★

A-4 Max Chest Protector Blk/anth/fluo Ylw Xl/2x

$189.95

Brand: Zeta

★ ★ ★ ★ ★

Honda Monkey Skid Plate

Features: Guard body is made of durable 3.5mm thick aluminum to protect exhaust pipe and engine from stone and mud Many slit holes for engine cooling air flow Bracket is...

$149.95

Brand: Tts

★ ★ ★ ★ ★

Mastertune Bluetooth Canbus

The tts bluetooth mastertune system is designed specifically to tune delphi-equipped harley-davidson® motorcycles `12-up, and includes four powerful windows®-based programs

$459.95

Brand: Shinko

★ ★ ★ ★ ★

Tire 009 Raven Front 120/70zr17 58w Radial Tl

The raven radial was specifically designed for long life.The raven provides superior riding comfort while its tread compound gives high grip on both wet and dry roads.

$58.99

Brand: Shinko

★ ★ ★ ★ ★

Tire 009 Raven Front 120/60zr17 55w Radial Tl

The raven radial was specifically designed for long life.The raven provides superior riding comfort while its tread compound gives high grip on both wet and dry roads.

$57.99

Brand: Shinko

★ ★ ★ ★ ★

Tire 005 Advance Front 130/70r18 63v Radial Tl

Large block type tread pattern with excellent braking, cornering and acceleration characteristics.

$75.99

Sold Out

Brand: Risk Racing

★ ★ ★ ★ ★

Holeshot Starting Gate Manual

Starting gates are used by racers all around the world to train for the most important part of any race, the holeshot! use the manual version to practice with a...

$193.99

Brand: Yoshimura

★ ★ ★ ★ ★

YOSHIMURA AT2 STREET SO SS/SS/CF WF WORKS SUZ

Matte Carbon Fiber end cap All-new faceted end cap Custom matte carbon fiber heal guard specific to each application Exclusive Yoshimura Works Finish Made in USA Fits: Suzuki 2023 - GSX-R1000 2022 - GSX-R1000...

$614.99

-67%

Sold Out

Brand: Firebrand

★ ★ ★ ★ ★

Monarch 2-1 Ss M8 Touring `17-23

-67%

$533.99

$1,627.95

Brand: Kolpin

★ ★ ★ ★ ★

Outfitter Box

$289.99

Brand: Caliber

★ ★ ★ ★ ★

Sled Wheels

A safe and effective mobile solution!

$349.99

-26%

Brand: Uswe

★ ★ ★ ★ ★

USWE "Moto Hydro" Hydration Pack, Water Bladder, High Quality Bounce Free Backpack for Enduro and Off-Road Cycling

A high-end hydration pack for Off-road and Enduro motorcycle racing and adventure, totally Bounce Free with perfect balanced fit. The Moto Hydro 12 is geared up with a main storage...

-26%

$118.99

$159.99

Brand: Antigravity

★ ★ ★ ★ ★

Lithium Battery Atx30-rs 880 Ca

$449.99

Brand: Fly Racing

★ ★ ★ ★ ★

Terra Trek Pants Sand Sz 40 Tall

$164.99

Brand: California Heat

★ ★ ★ ★ ★

Dual Clip Case

$15.00

Brand: Giant Loop

★ ★ ★ ★ ★

Revelstoke Dry Bag 16l Black

$84.99

Brand: Bobster

★ ★ ★ ★ ★

Cruiser 3 Goggles Matte Black W/4 Interchangeable Lenses

$48.99

Brand: Sena

★ ★ ★ ★ ★

10r Low Profile Headset W/ Intercom Single

Low profile, yet rich with high-performance features, the sena 10r lets riders make hands-free phone calls, listen to music, get gps directions, and have full-duplex intercom conversations with other riders...

$239.00

Brand: Kfi

★ ★ ★ ★ ★

Tiger Tail Tow System

$185.00

New

Brand: D-COR

★ ★ ★ ★ ★

#3 White 6 Slash Series 3/Pk

Features: 12-mil vinyl, backed with genuine 3M? Adhesive 3 numbers per pack Number font is a custom-modified, impact style, race font. Used by top Supercross and Motocross teams - Monster...

$7.50

New

Sold Out

Brand: VERTEX

★ ★ ★ ★ ★

Complete Gasket Set With Oil Seals

These sets include all gaskets and seals necessary to rebuild the engine and transmission. Fits Suzuki,DR200,,1986 Suzuki,DR200,,1987 Suzuki,DR200,,1988 Suzuki,DR200S,,2018 Suzuki,DR200S,,2019 Suzuki,DR200S,,2020 Suzuki,DR200SE,,1996 Suzuki,DR200SE,,1997 Suzuki,DR200SE,,1998 Suzuki,DR200SE,,1999 Suzuki,DR200SE,,2000 Suzuki,DR200SE,,2001 Suzuki,DR200SE,,2002 Suzuki,DR200SE,,2003 Suzuki,DR200SE,,2004...

$75.77

New

Brand: VERTEX

★ ★ ★ ★ ★

Top End Gaskets

These sets include the head, base, and upper end gaskets. They are designed for piston replacement. Includes all gaskets and seals from base gasket up.Features:These sets include the head, base,...

$36.76

New

Brand: CAMSO

★ ★ ★ ★ ★

3.50 Pitch Conquer 280 Track 175 X 2.80 15 Wide

Proven by over a decade of mountain performance, and backed by a full two-year warranty, Camoplast mountain tracks are engineered to perform in a wide variety of snow conditions from...

$1,679.00

New

Brand: ALL BALLS

★ ★ ★ ★ ★

Carburetor Rebuild Kit

Features: KITS SOLD PER MACHINE, ORDER 1 KIT PER MODEL Kit includes necessary O-rings, gaskets, funnel gasket, jets, needle, mixture screw, float bowl screws, float valve needle and seat. (Needle...

$106.95

New

Brand: CYLINDER WORKS

★ ★ ★ ★ ★

Cylinder Kit 66.00/Std 11.7:1 Hon

Features: Includes cylinder, piston kit and gaskets Matched with vertex pistons to ensure longevity, performance and reduce engine noise Replacement piston, gaskets, and ring sets available Cylinder looks just like...

$463.95

New

Brand: WISECO

★ ★ ★ ★ ★

Piston Kit Armorglide 81.00/Std 11:1 Yam

Features: All Wiseco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life. Diamond turned finish from one of...

$224.95

New

Brand: SPIKE

★ ★ ★ ★ ★

Over Fenders (Set 4) Cf Moto 800 Trl Z Force

Features: Sold as a complete set of 4 (2 front & 2 rear) Made of black HMW haircell polyethylene .125* Cut with superior CNC 5-axis router*all edges are super-smooth. Custom...

$234.95

New

-4%

Brand: VENOM PRODUCTS

★ ★ ★ ★ ★

Sprocket Ski Doo Xp 49t

Features: Bottom sprocket for Rexnord Silent Chains Fits `21 and up Ski-Doo Except `20-23 factory turbo 2-Strokes Includes spacer to fit `08-21 2-Stroke, 11-Up 4-Stroke Product Features:

-4%

$153.99

$159.95

New

Brand: VORTEX

★ ★ ★ ★ ★

Rear Cat5 Sprocket Aluminum 47t 520 Blk Yam

Features: Anodized FIRST then CNC machined from 7075 aluminum You end up with a trick colored sprocket with silver highlights Unique tooth design Trusted by champions Product Features:

$78.95

New

Brand: VORTEX

★ ★ ★ ★ ★

Rear Cat5 Sprocket Aluminum 46t 520 Blu Hon

Features: Anodized FIRST then CNC machined from 7075 aluminum You end up with a trick colored sprocket with silver highlights Unique tooth design Trusted by champions Fits Honda,CBR1000RA ABS,,2009 Honda,CBR1000RA...

$78.95

New

-9%

Brand: CANYON DANCER

★ ★ ★ ★ ★

Original Bar Harness X Wide Red

Features: Eliminates the use of hooks on the motorcycle while transporting Made from 5,500 lb. and 12,000 lb. test nylon webbing Slip nylon cuffs over grips, tug on cross straps...

-9%

$30.99

$33.95

New

Brand: RICKS

★ ★ ★ ★ ★

Stator

Features: All parts are new and built to OEM specifications 1 year warranty on all parts High quality cost effective replacement for OEM parts Fits Yamaha,YFM350ER Moto-4,,1995 Yamaha,YFM350FW Big Bear...

$241.95

New

Brand: RICKS

★ ★ ★ ★ ★

Stator

Features: All parts are new and built to OEM specifications 1 year warranty on all parts High quality cost effective replacement for OEM parts Fits Arctic Cat,1000 GT,,2012 Arctic Cat,1000...

$241.95

New

Brand: GIANT LOOP

★ ★ ★ ★ ★

Mojavi Saddlebag 12l Black

Features: All MoJavi Saddlebags include 1 Hot Springs Heat Shield ($30 value) Volume: 12 liters (2 x 6 liter side pockets) Rackless motorcycle luggage design straps on/off virtually any bike...

$309.95

New

Brand: HARDDRIVE

★ ★ ★ ★ ★

40mm Cv Carburetor

Features: 40mm CV Carburetor Body Comes with fuel line and vent hose Upgraded to brass fuel inlet, compared to the stock plastic inlet Additional jets for tuning Slow #45, #48,...

$214.95

New

Brand: GMAX

★ ★ ★ ★ ★

Gm 32 Open Face Helmet Blue Md

The GM-32 combines the modern convenience of an internal sun visor with the versatility of a three snap visor system. A COOLMAX? interior and 100% UV400 tinted shield are also...

$89.95

New

Brand: GMAX

★ ★ ★ ★ ★

Gm 32 Open Face Helmet Pearl White 2x

The GM-32 combines the modern convenience of an internal sun visor with the versatility of a three snap visor system. A COOLMAX? interior and 100% UV400 tinted shield are also...

$89.95

New

Brand: 100-PERCENT

★ ★ ★ ★ ★

Ridecamp Gloves Red Xl

Never Settle. Whether you're shredding trails or sending it big on the track, the performance and quality will withstand your best efforts with this modest glove. Give it your all.Features:...

$24.50

New

-60%

Brand: FLY RACING

★ ★ ★ ★ ★

Media Gloves Grey/Black Sz 09

Features: Ultra-lightweight minimalist race glove with a soft hand feel Conductive silicone contact points for touchscreen use Spandex mesh finger sidewall and gusset for improved airflow and lightweight feel Single...

-60%

$9.99

$24.95

New

-60%

Brand: FLY RACING

★ ★ ★ ★ ★

Media Gloves Grey/Black Sz 12

-60%

$9.99

$24.95

New

Brand: FLY RACING

★ ★ ★ ★ ★

Youth F 16 Gloves Black/Red/White Yxs

Features: All-around performance riding glove Four-way stretch perforated neoprene cuff provides support, comfort and airflow Soft-flex logos provide protection and a clean look Durable lightly padded palm with reinforced thumb...

$24.95

New

Brand: FLY RACING

★ ★ ★ ★ ★

Lite Lancer Gloves Navy/Hi Vis 3x

Features: Ultra-lightweight minimalist race glove with a soft hand feel Touch screen compatible single-layer Clarino? palm, perforated for improved airflow and a lightweight feel Spandex mesh finger sidewall and gusset...

$24.95

New

Brand: FLY RACING

★ ★ ★ ★ ★

Youth F 16 Gloves Black/Red/White Ys

$24.95

New

Brand: FLY RACING

★ ★ ★ ★ ★

Youth F 16 Gloves Black/Red/White Ym

$24.95

WHAT OTHERS HAVE SAID ABOUT US:

AVERAGE ⭐ RATING 4.8/5.0

"The parts and shipping were excellent, and the customer service was really helpful when I had a question. My only issue was that the website was a little tricky to navigate at first, but once I found what I needed, everything else was smooth. Still a great experience overall!" — Laura G.

📦 Purchased: Can-Am Defender HD8 Tie Rods & Belt | 🛒 ATVUTVs.com Rating: ⭐⭐⭐⭐⭐

📦 Purchased: Polaris RZR Clutch Kit | 🛒 ATVUTVs.com Rating: ⭐⭐⭐⭐

"ATVUTVs.com had exactly what I needed for my side-by-side, and their website made it easy to find the right part. Plus, free shipping over $200 saved me money!" — Mike G.

📦 Purchased: Honda Pioneer Winch Kit | 🛒 ATVUTVs.com Rating: ⭐⭐⭐⭐⭐

📦 Purchased: Polaris RZR Clutch Kit | 🛒 ATVUTVs.com Rating:⭐⭐⭐⭐⭐

📦 Purchased: Can-Am Maverick X3 Drive Belt | 🛒 ATVUTVs.com Rating: ⭐⭐⭐⭐⭐

"I had some technical questions about a new performance exhaust, and their team actually answered the phone! No robots, just real people who know their stuff. Made my decision easy." — Rob's Garage

📦 Purchased: RZR Turbo Exhaust System | 🛒 ATVUTVs.com Rating: ⭐⭐⭐⭐⭐

"Ordered a belt and tie rods for my Can-Am on Monday, had them by Wednesday. Everything was packaged well and exactly what I needed. You guys have earned a loyal customer!" — Eric P.

📦 Purchased: Can-Am Defender HD8 Tie Rods & Belt | 🛒 ATVUTVs.com Rating: ⭐⭐⭐⭐⭐

SHOP OUR COLLECTIONS

CHECK OUT OUR CATEGORY COLLECTIONS

Snowmobile Collection
The Streets
Apparel Collection
Bicycle Collection
Offroad Collection

Brand: Caliber

★ ★ ★ ★ ★

Sled Wheels

A safe and effective mobile solution!

$349.99

New

-16%

Brand: Epi

★ ★ ★ ★ ★

Drive Clutch Rebuild Kit P85

-16%

$201.99

$239.99

New

-4%

Brand: Epi

★ ★ ★ ★ ★

Drive Clutch Rebuild Kit P85

-4%

$167.99

$174.99

New

-11%

Brand: Sp1

★ ★ ★ ★ ★

Driven Shim Kit Outer A/c

-11%

$7.99

$8.95

New

Brand: Hygear

★ ★ ★ ★ ★

Hygear Shock Shaft Fox 1/2" X 9.7" Solid

$54.95

New

Brand: Hygear

★ ★ ★ ★ ★

Ea/ Hygear Shock Shaft We 5/8" X 9" 5/8-18 Needle Mnt

$99.95

New

Brand: Hygear

★ ★ ★ ★ ★

Ea/ Hygear Shock Shaft Walker Evans Pol 5/8" X 8.91"

$99.95

New

Brand: Hygear

★ ★ ★ ★ ★

Ea/ Hygear Shock Shaft Walker Evans Pol 1/2" X 6.60"

$54.95

New

Brand: Hygear

★ ★ ★ ★ ★

Ea/ Hygear Shock Shaft Fox A-c Pol 1/2" X 9.95

$54.95

New

Brand: Hygear

★ ★ ★ ★ ★

Ea/ Hygear Shock Shaft Fox A-c Pol 1/2" X 9.60"

$54.95

New

Brand: Hygear

★ ★ ★ ★ ★

Ea/ Hygear Shock Shaft Fox A-c Pol 1/2" X 9.55"

$54.95

New

Brand: Hygear

★ ★ ★ ★ ★

Ea/ Hygear Shock Shaft Fox A-c Pol 1/2" X 9.45"

$54.95

Brand: Zeta

★ ★ ★ ★ ★

Honda Monkey Skid Plate

Features: Guard body is made of durable 3.5mm thick aluminum to protect exhaust pipe and engine from stone and mud Many slit holes for engine cooling air flow Bracket is...

$149.95

Brand: Yoshimura

★ ★ ★ ★ ★

YOSHIMURA AT2 STREET SO SS/SS/CF WF WORKS SUZ

$614.99

Brand: Giant Loop

★ ★ ★ ★ ★

Revelstoke Dry Bag 16l Black

$84.99

New

-16%

Brand: Fire Power

★ ★ ★ ★ ★

Sealed Bearing 6908-2rs

The finest quality bearings featuring durable rubber seals on both sides for protection from sand and water.

-16%

$15.99

$18.95

New

Brand: Vortex

★ ★ ★ ★ ★

Rear Cat5 Sprocket Aluminum 41t-525 Blu Kaw/suz/yam

$81.95

New

Brand: Vortex

★ ★ ★ ★ ★

Front Cs Sprocket Steel 16t-525 Yam

$43.95

New

Brand: Vortex

★ ★ ★ ★ ★

Front Cs Sprocket Steel 15t-525 Yam

$43.95

New

Brand: Vortex

★ ★ ★ ★ ★

Front Cs Sprocket Steel 17t-525 Yam

$37.95

New

Brand: Vortex

★ ★ ★ ★ ★

Front Cs Sprocket Steel 16t-525 Yam

$37.95

New

Brand: Vortex

★ ★ ★ ★ ★

Front Cs Sprocket Steel 15t-525 Yam

$37.95

New

Brand: Vortex

★ ★ ★ ★ ★

Front Cs Sprocket Steel 16t-530 Hon/tri

$42.95

New

Brand: Vortex

★ ★ ★ ★ ★

Front Cs Sprocket Steel 15t-530 Hon/tri

$42.95

Brand: Alpinestars

★ ★ ★ ★ ★

A-4 Max Chest Protector Blk/anth/fluo Ylw Xl/2x

$189.95

-26%

Brand: Uswe

★ ★ ★ ★ ★

USWE "Moto Hydro" Hydration Pack, Water Bladder, High Quality Bounce Free Backpack for Enduro and Off-Road Cycling

A high-end hydration pack for Off-road and Enduro motorcycle racing and adventure, totally Bounce Free with perfect balanced fit. The Moto Hydro 12 is geared up with a main storage...

-26%

$118.99

$159.99

Brand: Fly Racing

★ ★ ★ ★ ★

Terra Trek Pants Sand Sz 40 Tall

$164.99

Brand: California Heat

★ ★ ★ ★ ★

Dual Clip Case

$15.00

New

Brand: Scott

★ ★ ★ ★ ★

Lens Nsxi/ Recoilxi/ 80 Therm Sil Chr

A dual pane lens designed to separate the warm air in the goggle chamber from the chilly air outside.All thermal lenses feature scott’s no-fog™ lens coating, polycarbonate material to maintain...

$26.00

New

Brand: Highway 21

★ ★ ★ ★ ★

Hanger Post Waterfall Slat Wall

$12.95

New

-21%

Brand: Alpinestars

★ ★ ★ ★ ★

Enduro 7 Sole Black/white Sz 11

-21%

$49.99

$62.95

New

Brand: Alpinestars

★ ★ ★ ★ ★

Tech 10 New Gen Sole Black/white Sz 11/12

$63.99

New

-3%

Brand: Gaerne

★ ★ ★ ★ ★

Super-x Sole 06-08

-3%

$28.99

$29.99

-10%

Brand: New-ray

★ ★ ★ ★ ★

1:6 Yamaha Factory Team Yz450f Eli Tomac #3 W/#1 Sx/mx

-10%

$64.99

$71.95

-6%

Brand: New-ray

★ ★ ★ ★ ★

1:12 Scale Yamaha Factory Team Yz450 Dylan Ferandis #14

-6%

$31.99

$33.95

-6%

Brand: New-ray

★ ★ ★ ★ ★

1:12 Scale Mxon Yamaha Yz450f Eli Tomac #101

-6%

$31.99

$33.95

Brand: Fly Racing

★ ★ ★ ★ ★

Helmet/hat Holder Display

$12.95

Brand: Alpinestars

★ ★ ★ ★ ★

New Tech 10 Boot Keyfob White

$9.95

-5%

Brand: Alpinestars

★ ★ ★ ★ ★

Copr Trucker Hat Red/black Flat Bill

-5%

$18.99

$19.95

Brand: Alpinestars

★ ★ ★ ★ ★

Bionic Flex Knee Protector Black/red Lg/xl

With ergonomically profiled nucleon flex technology protection held securely in position via an elasticated top strap and silicon hems, the bionic flex knee protector incorporates comfort padding with a soft-touch...

$94.95

Brand: Alpinestars

★ ★ ★ ★ ★

Bionic Action V2 Protection Jacket Greyblack Xl

An ultra-lightweight ce and ukca certified protection jacket offering excellent upper body protection against impacts.This protector features and all new cell technology chest protector for optimum ventilation, while its divided...

$179.95

Brand: Fly Racing

★ ★ ★ ★ ★

Single Lens W/post Adult Gold Mirror/smoke

$16.95

Brand: Fly Racing

★ ★ ★ ★ ★

Single Lens W/post Adult Red Mirror/smoke

$17.95

Brand: Evs

★ ★ ★ ★ ★

Rc4 Race Collar Black Adult

The r4 is a lightweight, form fitting race collar offering protection against neck and collarbone injuries.The low profile design makes it a comfortable yet protective piece of gear you can...

$89.99

Brand: Evs

★ ★ ★ ★ ★

Rc2 Race Collar Youth

$52.99

Brand: Evs

★ ★ ★ ★ ★

Slam Combo Kit Black Adult

The slam combo is sold as a set and includes option knee & elbow pads and r2 race collar.The ultimate protection combo at a fraction of the price.

$91.99

Brand: Evs

★ ★ ★ ★ ★

Option Elbow Pads Black Adult

The option elbow pad has been completely redesigned.It features a hard molded polypropylene shell with a perforated bio-foam liner for increased breathability and superior impact protection.The tri-y forearm strapping system...

$25.99