SSR pit bike engines come from YX (YinXiang), Lifan, and Bangen; the supplier varies by model and year.
Shopping for an SSR pit bike gets easier when you know who builds the motors. Most current models use YX horizontal singles; some trims ship with Lifan, and small-auto versions often run Bangen. Below you’ll find model charts, ID cues, and buying tips.
Who Makes SSR Pit Bike Engines? Model-By-Model Answers
SSR Motorsports is a U.S. brand that imports bikes and specs engines from Chinese OEMs. The company highlights engine suppliers in many model spec sheets, which is why you’ll see YX listed on core models like SR110, SR125, SR140, SR160, and SR170, while select TR trims show Lifan labeling, and 70–125 auto models often list Bangen.
Quick Reference: Current And Recent Models
If you landed here by searching “who makes ssr pit bike engines?”, you’re in the right place—this section gets you answers fast.
The table below maps common SSR pit bike models to the engine brand shown on official spec pages or widely circulated dealer sheets.
| SSR Model | Engine Brand | Source Note |
|---|---|---|
| SR70C / SR70AUTO | Bangen | Listed on SR70AUTO and accessory notes for Bangen/YX wiring compatibility |
| SR110 / SR110SEMI / SR110DX | YX | Engine type shows YX on SSR spec pages |
| SR110TR | Lifan | TR trim spec sheets show Lifan |
| SR125 (base) / SR125SEMI | YX | Engine type shows YX on SSR spec pages |
| SR125AUTO | Bangen | Dealer sheets list BangEn/Bangen on the Auto trim |
| SR125TR / SR125TR-BW | Lifan | TR comparison/spec pages list Lifan |
| SR140R / SR140RB / SR140TR | YX | Dealer and SSR pages show YX on 140cc TR/R models |
| SR160TR / SR160TX | YX | SSR spec pages show YX 161cc |
| SR170TR / SR170TX | YX | SSR 360 view page calls out YX with roller rocker |
How To Confirm The Engine On Your Exact Bike
Two quick checks lock it in. First, open the SSR model page and look for “Engine Type.” If it reads “YX™,” you’re on a YX motor; if it says “Lifan®,” that trim ships with a Lifan; if it shows “BangEn™/Bangen,” that’s the supplier. Second, check the right-side cylinder label or clutch cover casting for a brand stamp.
Where Each Supplier Fits
YX (YinXiang): The workhorse. Powers SR110, SR125 base, and 140/160/170 TR and TX trims.
Lifan: Found on TR variants like SR110TR and SR125TR. Uses the common Honda-pattern cases.
Bangen: On auto-clutch bikes such as SR70AUTO and some 125 Auto listings. SSR wiring notes reference Bangen and YX together.
Who Makes The Engine For SSR Pit Bikes — By Trim And Year
Model names repeat across years, and trims shift. That’s why the exact engine can vary. The snapshot below shows typical pairings that shoppers run into when comparing current and recent stock.
Typical Pairings By Displacement
- 70–72cc: Bangen on Auto; base SR70C may list generic specs without a brand call-out.
- 107–110cc: YX on SR110, SR110SEMI, SR110DX; Lifan on SR110TR.
- 124–125cc: YX on SR125 base and SR125SEMI; Bangen on SR125 Auto; Lifan on SR125TR/TR-BW.
- 140–141cc: YX on SR140R/RB/TR families.
- 160–161cc: YX on SR160TR and SR160TX.
- 169–170cc: YX with roller rocker valve train on SR170TR/SR170TX.
Why SSR Uses Multiple Engine Suppliers
SSR specs, imports, and distributes. That lets the brand pick engines that fit price and parts supply by trim: YX for most sport and midrange, Lifan for several TR variants, and Bangen for entry-level auto units.
Spot The Difference: Visual And Spec Cues
You don’t have to strip a bike to spot the engine brand. Use these cues.
Stampings And Covers
- YX: Many castings show “YX” or distinct cover styling around the clutch and stator areas.
- Lifan: Look for “Lifan” cast into the clutch cover or visible on the engine label.
- Bangen: Auto models often show BangEn/Bangen wording on labels and in model descriptions.
Spec Sheet Language
- “Engine Type: YX™, Single Cylinder, 4 Stroke” appears on many SSR pages for SR110/SR125 and up.
- TR comparisons and trim pages list “Lifan®” on SR110TR and SR125TR style bikes.
- 70–125 Auto pages and wiring notes mention BangEn/Bangen compatibility.
Why It Matters For Maintenance And Upgrades
Knowing the engine brand makes parts hunting simple. Top-end bits, ignition parts, and gearsets can differ between YX, Lifan, and Bangen. Match the brand before ordering.
Service Notes That Save Headaches
- CDI and stator: Harness pinouts and flywheel taper can vary. Check the wiring diagram for your exact model and engine.
- Carb size: YX 140/160/170 trims often run 26–27 mm; many TR 110–125 trims ship with 22 mm.
- Oil coolers: Many 140/160/170 YX bikes include an external cooler.
- Shift pattern: Most SSR manual boxes are 4-up; semi-auto and auto units differ.
Who Makes SSR Pit Bike Engines? Real-World Examples
You can cross-check online: SR110 and SR125 base list YX; SR110TR lists Lifan; SR125 Auto appears with BangEn on dealer pages; SR160TR/SR160TX show YX 161 cc; SR170TR 360 calls out a YX roller-rocker engine.
Linked Proof You Can Verify
Find “YX™” on the SR110 page and on the SR125 page. The SR110TR page shows “Lifan®.” For auto trims, dealers list “BangEn™” on the SR125 Auto, such as this SR125 Auto page. The SR160TR and SR160TX pages state “YX™, 161 cc,” and the SR170TR 360 view calls out a YX engine with roller rockers.
Model-By-Model Engine Notes (Deep Dive)
This compact table rounds up the most common questions riders ask once they learn which supplier is on a given bike.
| Question | Short Answer | Tip |
|---|---|---|
| Can SR110 take a 26–27 mm carb? | Yes on YX; jet accordingly. | Start rich, then step down after plug reads. |
| Are SR125 base and SR125TR cams the same? | No, brands differ. | Match cam and sprocket to the engine brand. |
| Does SR125 Auto share electrics with YX? | Some parts do. | Use SSR wiring guides for Bangen/YX harnesses. |
| Will a YX160 top end fit SR140? | Often yes. | Check piston pin size and cylinder skirt depth. |
| Do TR models have stronger boxes? | Ratios differ by brand. | Order gears by engine family, not by cc alone. |
| Is the 170 roller rocker unique? | YX feature. | Set valve lash to spec after every hard ride. |
| Are gaskets interchangeable? | Base shapes match often. | Get brand-specific kits to avoid leaks. |
Buying Tips If You’re Choosing Between Trims
Pick By Power And Parts Availability
Go YX for the broadest pool of hop-ups. Choose a TR with Lifan if you like that brand’s feel and gearing. Pick Bangen Auto for clutchless learning. Spares exist for all three, with deep shelves around YX and Lifan.
Match The Engine To The Rider
- Kids and beginners: SR70AUTO or SR125 Auto keeps starts easy.
- Trail play: SR110 or SR125 base keeps it simple and tough.
- Mini-moto sessions: SR140/160/170 YX trims add coolers, stronger forks, and more grunt.
Method: How I Verified Engine Sourcing
If you’re asking yourself, “who makes ssr pit bike engines?”, the best move is to cross-check official spec sheets and dealer PDFs for the exact trim. I reviewed multiple SSR model pages, then matched those details to current dealer specs and accessory notes. I also checked the YinXiang site for confirmation that YX manufactures complete motorcycle engines, and I scanned a Lifan service manual to verify the standard horizontal engine families used across many pit bikes.
For quick self-verification, open the SSR page for your exact model, then scroll to “Engine Type.” Next, compare that to an engine maker page. YinXiang lists engines among its core product lines. Lifan publishes specs for 1P52/53 series horizontal engines used in many 110–125 builds. If you still need proof, call a local SSR dealer and ask them to read the line that names the engine brand on the invoice or build sheet—easy and decisive.
Useful links while you check: SSR’s About page explains the brand’s importer/distributor role, YinXiang (YX) lists engines among core products, and this Lifan manual outlines the horizontal series used in many pit bikes.
If you run into an older Craigslist or Facebook listing that’s missing a trim label, use the cues in this guide, then compare the top engine mount, clutch cover shape, and carb size. That routine usually nails the ID in minutes. And if you’re still unsure, snap a side photo of the engine and ask a dealer to match it. Either way, you’ll answer “who makes ssr pit bike engines?” with confidence.
Sources And Specs You Can Trust
SSR’s own pages list engines by name on many trims, and the brand’s accessory pages note Bangen/YX compatibility. Dealer spec pages mirror those listings for current inventory. YX (YinXiang) and Lifan publish engine info for their horizontal singles, which match the formats used in SSR pit bikes. When you bookmark a few key pages—the SR110 and SR125 specs, the TR comparison pages, and the SR170TR 360 callout—you can confirm a model in seconds and avoid parts mix-ups later. Dealer sheets mirror factory wording line for line. Screenshots or PDFs saved from the model pages are handy for garage use.
Clear Answer And Next Steps
When someone asks, “who makes SSR pit bike engines?”, the accurate answer is that SSR sources from a few trusted suppliers. YX covers most models. Lifan powers several TR trims. Bangen shows up on auto-clutch entry models. Once you match the engine brand to your goals and parts plan, the rest of the choice is easy.
With the tables and links above, you won’t need to ask “who makes ssr pit bike engines?” the next time a listing pops up—just match the trim to the supplier and ride.