AT-121B Powervision Autotune kit (with bungs) for H-D MT22
incl. VAT
Chapter members save 15% · Sign in for member pricing
Estimated delivery: 3–15 working days
Authorised
Iron City Dealer
14-Day Returns
Easy & hassle-free
Secure Checkout
256-bit encryption
Free UK Delivery
On orders over £100
Specifications
- Brand
- Dynojet
- Part Number
- AT-121B
- OEM Reference
- —
- Pack Quantity
- Sold as kit
- Category
- Fuel Injection Controllers
- VAT Rate
- 20%
About This Product
Dynojet Power Vision Autotune kit with bungs for 2021 to 2024 Harley-Davidson with the MT22 ECU. Fits Milwaukee-Eight models from the Fat Boy and Road King through to the Pan America 1250. Adds wideband O2 sensors so the Power Vision 4 adjusts VE tables automatically in real time. Accounts for altitude and modification changes. Plug and play.
Manufacturer part number: AT-121B.
Fitment
31 modelsFor 21-24H-D with MT22 ECU in combination with a Power Vision 4 module: •FLFBS Fat Boy 114 2021; 2022; 2023; 2024•FLFBSANV Fat Boy Anniversary 2023•FLH Electra Glide Revival 2021•FLHC Heritage Classic 107 2021•FLHCS Heritage Classic 114 2021; 2022; 2023; 2024•FLHCSANV Heritage Classic Anniversary 2023•FLHR Road King 2021; 2022•FLHRXS Road King Special 2021; 2022; 2023; 2024•FLHT Electra Glide Standard 2021; 2022•FLHTCUTGSE CVO Tri Glide 2021•FLHTK Ultra Limited 2021; 2022; 2023; 2024•FLHTKANV Ultra Limited Anniversary 2023•FLHTKSE CVO Limited 2021•FLHX Street Glide 2021; 2022•FLHXS Street Glide Special 2021; 2022; 2023•FLHXSANV Street Glide Anniversary 2023•FLHXSE CVO Street Glide 2021; 2022•FLHXST Street Glide ST 2022•FLSB Sport Glide 107 2021•FLSL Softail Slim 107 2021•FLTRK Road Glide Limited 2023; 2024•FLTRKSEANV Road Glide Limited Anniversary 2023•FLTRX Road Glide 2021; 2022•FLTRXS Road Glide Special 2021; 2022; 2023•FLTRXSANV Road Glide Anniversary 2023•FLTRXSE CVO Road Glide 2021; 2022•FLTRXST Road Glide ST 2022; 2023•FXBBS Street Bob 114 2021; 2022; 2023; 2024•FXBR Breakout 117 2023; 2024•FXBRS Breakout 114 2021•FXFBS Fat Bob 114 2021; 2022; 2023•FXLRS Low Rider S 114 2021•FXLRS Low Rider S 117 2022; 2023; 2024•FXLRST Low Rider ST 117 2022; 2023; 2024•FXST Softail Standard 107 2021; 2022; 2023; 2024•RA1250 Pan America 1250 2021; 2022; 2023•RA1250S Pan America 1250 Special 2021; 2022; 2023
CVO/Custom 2 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2021 | CVO Tri Glide FLHTCUTGSE |
| Harley-Davidson | 2022 | CVO Trike FLHTCUTGSE |
Softail 9 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2023–2024 | Breakout FXBR |
| Harley-Davidson | 2022–2024 | Fat Bob 114 FXFBS |
| Harley-Davidson | 2021–2024 | Fat Boy 114 FLFBS |
| Harley-Davidson | 2021–2022 | Heritage Classic 114 FLHCS |
| Harley-Davidson | 2021 | Heritage Classic FLHC |
| Harley-Davidson | 2021–2024 | Low Rider S FXLRS |
| Harley-Davidson | 2022–2024 | Low Rider ST FXLRST |
| Harley-Davidson | 2021–2024 | Sport Glide FLSB |
| Harley-Davidson | 2021–2024 | Street Bob 114 FXBBS |
Sportster RH 6 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2025 | Nightster RH975 |
| Harley-Davidson | 2022–2023 | Nightster RH975 |
| Harley-Davidson | 2025 | Nightster Special RH975S |
| Harley-Davidson | 2023–2024 | Nightster Special RH975S |
| Harley-Davidson | 2025 | Sportster S RH1250S |
| Harley-Davidson | 2023–2024 | Sportster S RH1250S |
Touring 11 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2023 | Electra Glide Highway King FLHFB |
| Harley-Davidson | 2023 | Road Glide Anniversary FLTRXSANV |
| Harley-Davidson | 2021–2023 | Road Glide FLTRX |
| Harley-Davidson | 2021–2022 | Road Glide Limited FLTRK |
| Harley-Davidson | 2021–2023 | Road Glide Special FLTRXS |
| Harley-Davidson | 2021–2023 | Road King Special FLHRXS |
| Harley-Davidson | 2023 | Street Glide Anniversary FLHXSANV |
| Harley-Davidson | 2021–2024 | Street Glide FLHX |
| Harley-Davidson | 2021–2023 | Street Glide Special FLHXS |
| Harley-Davidson | 2021–2023 | Ultra Limited FLHTK |
| Harley-Davidson | 2021–2023 | Ultra Limited Shrine Edition FLHTK |
Trike 3 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2021–2023 | Freewheeler FLRT |
| Harley-Davidson | 2023–2024 | Road Glide 3 FLTRT |
| Harley-Davidson | 2021–2024 | Tri Glide Ultra FLHTCUTG |
Planning other changes? Find your model in the bike customiser.
Related Products
View all →
Dynojet
Exhaust actuator eliminator plug
Dynojet
Power Commander 6 for H-D
Dynojet
Auto Tune system, for HD LAN
Dynojet
Power Commander 6 for H-D
Dynojet
Power Commander 6 for H-D
Dynojet
Power Commander 6 for H-D
Dynojet
Power Commander 6 for H-D
Dynojet
Power Commander 6 for H-D
More from Dynojet
View all →Exhaust actuator eliminator plug
Air cleaner signal eliminator plug
Thunderslide CV kit, US models. Stage 1
Power Commander 6 for H-D
Auto Tune system, for HD LAN
Quick Shifter. Tension sensor - push
Thunderslide CV kit. Stage 1
Thunderslide CV kit. Stage 1
Who are we? Leeds Harley-Davidson - Iron City Motorcycles
This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.
From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.
Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.