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4040A-PWB1-900 Coupling Rear Output Shaft

Fits 40 KYMCO model-years, including MAXXER 450i (2026) and MAXXER 450I (2025). Callout 7 on the E10 Shaft Drive Front diagram, 2 per machine.

Genuine KYMCO OEM Part no. 4040A-PWB1-900 Also written 4040APWB1900 Fits 40 model-years

Part number: 4040A-PWB1-900
Also written: 4040APWB1900
Factory name: COUPLING REAR OUTPUT SHAFT

$131.97

US shipping, calculated at checkout · Special orders come from KYMCO’s US distributor · 14-day returns & fitment guarantee

What this part is

Coupling Rear Output Shaft is the component KYMCO's factory catalogue lists under number 4040A-PWB1-900, in the transmission & drive group. It is drawn on the E10 Shaft Drive Front exploded view as callout 7, and the table below lists every model-year that takes it.

Fits these KYMCO models (40 model-years)

Model	Years	Factory code	Diagram	Callout	Qty
MAXXER 450i	2026	LC90BN(US)	E10 Shaft Drive Front	7	2
MAXXER 450I	2025	LC90BL(US)	E10 Shaft Drive Front	7	2
MAXXER 450i (2021)	2021	LC90BH(US)	E10 Shaft Drive Front	7	2
MAXXER 450i (2023)	2023	LC90BK(US)	E10 Shaft Drive Front	7	2
MXU 450 (2017~)	2017+	LC90EJ(US)	E10 Shaft Drive Front	7	2
MXU 450 I 2026 EPA	2026	LC90LT(US)	E10 Shaft Drive Front	7	2
MXU 450i (2017~)	2017+	LC90EE(US)	E10 Shaft Drive Front	7	2
MXU 450i (2021)	2021	LC90LG(US)	E10 Shaft Drive Front	7	2
MXU 450i (2023)	2023	LC90LK(US)	E10 Shaft Drive Front	7	2
MXU 450i (2024)	2024	LC90LN(US)	E10 Shaft Drive Front	7	2
MXU 450i LE (2017~)	2017+	LC90EF(US)	E10 Shaft Drive Front	7	2
MXU 450i LE (2023)	2023	LC90LL(US)	E10 Shaft Drive Front	7	2
MXU 450I LE 2026 EPA	2026	LC90LU(US)	E10 Shaft Drive Front	7	2
MXU 450i LE(2018)	2018	LC90EN(US)	E10 Shaft Drive Front	7	2
MXU 450i LE(2019)	2019	LC90ES(US), LC90ET(US)	E10 Shaft Drive Front	7	2
MXU 450i LE(2020)	2020 (Flat Deep Green)	LC90LC(US), LC90LB(US)	E10 Shaft Drive Front	7	2
MXU 450i LE(2021)	2021 (Black)	LC90LF(US), LC90LE(US)	E10 Shaft Drive Front	7	2
MXU 450i(2019)	2019	LC90ER(US)	E10 Shaft Drive Front	7	2
MXU 450i(2020)	2020	LC90LA(US)	E10 Shaft Drive Front	7	2
MXU 450i(2021)	2021	LC90LD(US)	E10 Shaft Drive Front	7	2

Show the remaining 20 fitments

Model	Years	Factory code	Diagram	Callout	Qty
UXV	2022	UA90JC(US)	E10 Shaft Drive Front	7	2
UXV	2023	UA90LK(US)	E10 Shaft Drive Front	7	2
UXV 450(2021)	2021	UA90GU(US), UA90LA(US)	E10 Shaft Drive Front	7	2
UXV 450i (2017~)	2017+ (Red, Blue, Black, Deep Green)	UA90GA(US), UA90HA(US)	E10 Shaft Drive Front	7	2
UXV 450i (2022MY)	2022	UA90GV(US)	E10 Shaft Drive Front	7	2
UXV 450i 2023MY	2023	UA90GW(US)	E10 Shaft Drive Front	7	2
UXV 450i CAMO (2017~)	2017+	UA90GD(US)	E10 Shaft Drive Front	7	2
UXV 450i LE (2016~)	2016+	UA90AF(US)	E10 Shaft Drive Front	7	2
UXV 450i LE (2017~)	2017+	UA90GB(US)	E10 Shaft Drive Front	7	2
UXV 450i LE EPS (2023MY)	2023	UA90LN(US)	E10 Shaft Drive Front	7	2
UXV 450i LE EPS(2024MY)	2024	UA90LP(US)	E10 Shaft Drive Front	7	2
UXV 450i LE(2018)	2018	UA90GE(US), UA90GF(US)	E10 Shaft Drive Front	7	2
UXV 450i LE(2019)	2019	UA90GK(US)	E10 Shaft Drive Front	7	2
UXV 450i LE(2020)	2020 (Flat Black)	UA90GR(US)	E10 Shaft Drive Front	7	2
UXV 450i MY2024	2024	UA90GX(US)	E10 Shaft Drive Front	7	2
UXV 450i Platform 2023MY	2023	UA90JD(US)	E10 Shaft Drive Front	7	2
UXV 450i Prime(2018)	2018	UA90GG(US)	E10 Shaft Drive Front	7	2
UXV 450i(2018)	2018	UA90GJ(US)	E10 Shaft Drive Front	7	2
UXV 450i(2020)	2020	UA90GP(US)	E10 Shaft Drive Front	7	2
UXV(2022)	2022 (Deep Green)	UA90JA(US)	E10 Shaft Drive Front	7	2

See it on the diagram

The factory exploded view this part is drawn on.

E10 — Shaft Drive Front

View diagram →

Often needed for the same job

From the same assembly diagrams as this part.

Not sure it’s yours?

Check the callout number: on the diagram above, 4040A-PWB1-900 is the part at callout 7.
Decode your VIN to land on the exact model, year and colour KYMCO built for you.
Still unsure? Email us the number and your VIN and we will confirm the fit.