Husqvarna TC 85 Engine Packages
Transparent Husqvarna TC 85 mod packages from HP Race Development: Weekend Racer, Privateer, and Factory Works builds with race porting, GET CDI mapping, billet head options, and complete engine services.
Select Your Level
Choose the package first. The engineering notes and build justification follow below for families who want the deeper breakdown.
TC 85 Platform
85cc PlatformWeekend Racer
Competes head-to-head with national mod kits without the fluff or unneeded extras.
$650 starting
Pricing may vary based on condition of parts received.
What You Ship Us
Cylinder with powervalve and carb
Includes
- Race Porting
- Carb Bore & Setup
- Head available as an add-on
- Piston & Gasket Kit available upon request
Recommended For
Local racing, practice bikes, and families who want real Husqvarna TC 85 performance without overbuying.
Pricing may vary based on condition of parts received.
Privateer
Our most popular Husqvarna TC 85 upgrade: the full synergistic port, ignition, carb, and head system.
$1,850
Pricing may vary based on condition of parts received.
What You Ship Us
Cylinder with powervalve and carb
Includes
- HP Race Porting Spec
- HP Custom Mapped GET CDI
- Carb Bored & Set Up with Notes
- Billet Head with HP Custom Race Dome
- Piston Kit
- Top End Gasket Kit
Available Add-ons
- +Professional installation onto customer's engine: +$150
Recommended For
Regional championships, serious amateur racing, and the best value Husqvarna TC 85 mod package.
Pricing may vary based on condition of parts received.
Factory Works
Zero compromises: complete top and bottom end build, professionally assembled and verified.
$3,950 / $4,600 with dyno
Pricing may vary based on condition of parts received.
What You Ship Us
Complete engine
Includes
- Factory Works Porting
- Custom HP Mapped GET CDI
- Carb Bored & Set Up with Notes
- Billet Head with HP Custom Race Dome
- Piston Kit
- Top End Gasket Kit
- Billet Connecting Rod
- REM / Super Finished Internals
- Ceramic Bearings for durability and reliability
- Cerakoted Cases available upon request
- Dyno Test & Power Verification available: +$650
Available Add-ons
- +Vapor Blast & Inspect Engine Parts for used engines: +$250
- +Replace all wear parts: priced after inspection
Recommended For
Loretta Lynn's, Mini Os, national-level Husqvarna TC 85 and Supermini programs.
New engine pricing shown. Used engine costs extra after inspection.
The Stock Bottleneck
"Most TC 85 engine builds are sold as loose parts lists instead of a matched port, ignition, head, and carb system."
The HP Race Dev Solution
"We build the TC 85 package as one calibrated combination so the power is usable, durable, and race-ready."
We don't just "grind ports." We mathematically correct the engine's geometry to solve this specific flaw.
Engineering the TC 85 Platform
The Husqvarna TC 85 shares the same core Austrian mini architecture, so it rewards the same disciplined system approach: powervalve blueprinting, carb signal, head volume, and ignition timing all have to agree with the port map.
Our Privateer and Factory Works packages pair HP Race porting with a custom mapped GET CDI, bored carb setup notes, and a billet head/dome combination so the engine does not become a narrow top-end-only build.
For serious TC 85 and Supermini racers, the Factory Works package adds the bottom-end durability pieces that matter during full moto abuse: billet rod hardware, REM finished internals, ceramic bearings, and dyno verification when selected.
Parts For This Platform
Common products used with TC 85 package builds.
Husky TC 85 Stage 2 Mod Package
$1,650.00Direct product listing for the Husqvarna TC 85 Stage 2 package.
View ProductGET CDI Husky TC 85 2018-2024
$582.95GET ignition option for 2018-2024 TC 85 builds.
View ProductGET CDI Husky TC 85 2025-2027
$582.95GET ignition option for the latest TC 85 platform.
View ProductVertex OEM Replica A Piston Kit - 85 KTM Group
$114.95Service piston option for KTM, Husqvarna, and GasGas 85s.
View ProductBillet Connecting Rod Rebuild Kit Husqvarna TC 85
$399.95Billet rod upgrade for TC 85 bottom-end rebuilds.
View ProductKTM Husky GasGas 85 Full Engine Gasket and Seal Kit
$216.95Full gasket and seal kit for complete 85 engine service.
View ProductCommon Questions: TC 85 Platform
What is the difference between a Mod 85 and a Supermini build?
A Mod 85 retains stock displacement but maximizes efficiency. A Supermini often involves boring and stroking, which requires completely different port timing to handle the increased piston speed.
How often do I need to do top ends on a Factory Spec 85?
High-performance engines demand maintenance. We recommend rings every 10-15 hours for peak competition, though our balanced cranks significantly reduce wear on the bottom end.