This document is Metaldyne Performance Group's first quarter 2015 earnings presentation which includes the following key points: - It provides disclaimers about forward-looking statements and non-GAAP financial measures included in the presentation. - It introduces several non-GAAP financial metrics used by management to evaluate performance including combined net sales, combined gross profit, adjusted EBITDA, adjusted free cash flow, and combined capital expenditures. - These non-GAAP measures are presented to provide useful supplemental information when comparing the company's performance before and after an acquisition.

1. LIGHT VEHICLE COMMERCIAL INDUSTRIAL
Metaldyne Performance Group
First Quarter 2015 Earnings Presentation
May 7, 2015

2. 2
Disclaimer
This presentation and any related statements contains certain “forward-looking statements” about MPG’s financial results and estimates and business prospects within the meaning of the Private Securities Litigation Reform
Act of 1995. Forward-looking statements may be identified by words such as “expects,” “intends,” “anticipates,” “plans,” “project,” “believes,” “seeks,” “targets,” “forecast,” “estimates,” “will” or other words of similar meaning and include, but are
not limited to, statements regarding the outlook for the Company’s future business, prospects, and financial performance; the industry outlook, our backlog and our 2015 financial guidance. Forward-looking statements are based on management’s
current expectations and assumptions, which are subject to inherent uncertainties, risks, and changes in circumstances that are difficult to predict. Actual outcomes and results may differ materially due to global political, economic, business,
competitive, market, regulatory, and other factors and risks, including, but not limited to, the following: volatility in the global economy impacting demand for new vehicles and our products; a decline in vehicle production levels, particularly with
respect to platforms for which we are a significant supplier, or the financial distress of any of our major customers; seasonality in the automotive industry; our significant competition; our dependence on large-volume customers for current and future
sales; a reduction in outsourcing by our customers, the loss or discontinuation of material production or programs, or a failure to secure sufficient alternative programs; our failure to offset continuing pressure from our customers to reduce our prices;
our inability to realize all of the sales expected from awarded business or fully recover pre-production costs; our failure to increase production capacity or over-expanding our production in times of overcapacity; our reliance on key machinery and
tooling to manufacture components for powertrain and safety-critical systems that cannot be easily replicated; program launch difficulties; a disruption in our supply or delivery chain which causes one or more of our customers to halt production;
work stoppages or production limitations at one or more of our customer’s facilities; a catastrophic loss of one of our key manufacturing facilities; failure to protect our know-how and intellectual property; the disruption or harm to our business as a
result of any acquisitions or joint ventures we make; a significant increase in the prices of raw materials and commodities we use; the damage to or termination of our relationships with key third-party suppliers; our failure to maintain our cost
structure; the incurrence of significant costs if we close any of our manufacturing facilities; potential significant costs at our facility in Sandusky, Ohio; the failure of or disruptions in our information technology networks and systems, or the inability to
successfully implement upgrades to our enterprise resource planning systems; the incurrence of significant costs, liabilities, and obligations as a result of environmental requirements and other regulatory risks; extensive and growing governmental
regulations; the adverse impact of climate change and related energy legislation and regulation; the incurrence of material costs related to legal proceedings; our inability to recruit and retain key personnel; any failure to maintain satisfactory labor
relations; pension and other postretirement benefit obligations; risks related to our global operations; competitive threats posed by global operations and entering new markets; foreign exchange rate fluctuations; increased costs and obligations as a
result of becoming a public company; the failure of our internal controls to meet the standards required by Sarbanes-Oxley; our substantial indebtedness; our inability, or the inability of our customers or our suppliers, to obtain and maintain sufficient
debt financing, including working capital lines; our exposure to a number of different tax uncertainties; the mix of profits and losses in various jurisdictions adversely affecting our tax rate; disruption from the combination of our operations and
diversion of management’s attention; our limited history of working as a single company and the inability to integrate HHI, Metaldyne, and Grede successfully and achieve the anticipated benefits.
For the reasons described above, we caution you against relying on any forward-looking statements, which should also be read in conjunction with the other cautionary statements that are included elsewhere in this press
release and in our public filings, including under the heading “Risk Factors” in our filings that we make from time to time with the Securities and Exchange Commission. You should not consider any list of such factors to be an exhaustive statement of
all of the risks, uncertainties, or potentially inaccurate assumptions that could cause our current expectations or beliefs to change. Further, any forward-looking statement speaks only as of the date on which it is made, and we undertake no
obligation to update or revise any forward-looking statement to reflect events or circumstances after the date on which the statement is made or to reflect the occurrence of unanticipated events, except as otherwise may be required by law.
Non-GAAP Financial Measures
Combined Net Sales
We define Combined Net Sales as the net sales of MPG plus the net sales of Grede prior to our acquisition of Grede. We present Combined Net Sales because our management considers it to be a useful, supplemental
indicator of our performance when comparing periods before and after our acquisition of Grede. For a reconciliation of Combined Net Sales to net sales, the most directly comparable GAAP measure, see Appendix to this presentation.
Combined Non-GAAP Gross Profit
We define Combined Gross Profit as the gross profit of MPG plus the gross profit of Grede prior to our acquisition of Grede. We present Combined Gross Profit because our management considers it to be a useful,
supplemental indicator of our performance when comparing periods before and after our acquisition of Grede. For a reconciliation of Combined Gross Profit to gross profit, the most directly comparable GAAP measure, see “ADJUSTEMENTS TO
RECONCILE TO US GAAP”.
Adjusted EBITDA and Combined Adjusted EBITDA
We define Adjusted EBITDA as net income (loss) before interest expense, provision for (benefit from) income taxes and depreciation and amortization, with further adjustments to reflect the additions and eliminations of
certain income statement items, including (i) gains and losses on foreign currency and fixed assets and debt transaction expenses, (ii) stock-based compensation and other non-cash charges, (iii) sponsor management fees and other income and
expense items that we consider to be not indicative of our ongoing operations, (iv) specified non-recurring items and (v) other adjustments. We define Combined Adjusted EBITDA as Adjusted EBITDA plus the Adjusted EBITDA of Grede prior to our
acquisition of Grede. We believe Adjusted EBITDA is used by investors as a supplemental measure to evaluate the overall operating performance of companies in our industry. Management uses Adjusted EBITDA (i) as a measurement used in
comparing our operating performance on a consistent basis, (ii) to calculate incentive compensation for our employees, (iii) for planning purposes, including the preparation of our internal annual operating budget, (iv) to evaluate the performance
and effectiveness of our operational strategies and (v) to assess compliance with various metrics associated with our agreements governing our indebtedness. Accordingly, we believe that Adjusted EBITDA provides useful information to investors and
others in understanding and evaluating our operating performance in the same manner as our management. We present Combined Adjusted EBITDA because our management considers it to be a useful, supplemental indicator of our performance
when comparing periods before and after our acquisition of Grede. For a reconciliation of Adjusted EBITDA and Combined Adjusted EBITDA to net income, the most directly comparable measure determined under U.S. generally accepted accounting
principles (“GAAP”), see Appendix to this presentation
Adjusted Free Cash Flow and Combined Adjusted Free Cash Flow
We define Adjusted Free Cash Flow as Adjusted EBITDA less capital expenditures. Capital expenditures can be found in our consolidated statements of cash flows as a component of cash flows from investing activities. We
define Combined Adjusted Free Cash Flow as Adjusted Free Cash Flow plus the Adjusted Free Cash Flow of Grede prior to our acquisition of Grede. We present Adjusted Free Cash Flow because our management considers it to be a useful,
supplemental indicator of our performance. When measured over time, Adjusted Free Cash Flow provides supplemental information to investors concerning our results of operations and our ability to generate cash flows to satisfy mandatory debt
service requirements and make other non-discretionary expenditures. We present Combined Adjusted Free Cash Flow because our management considers it to be a useful, supplemental indicator of our performance when comparing periods before
and after our acquisition of Grede. For a reconciliation of Adjusted Free Cash Flow and Combined Adjusted Free Cash Flow to net income, the most directly comparable GAAP measure, see Appendix to this presentation.
Combined Non-GAAP CapEx
We define Combined CapEx as the capital expenditures of MPG (“CapEx”) plus the capital expenditures of Grede prior to our acquisition of Grede. We present Combined CapEx because our management considers it to be a
useful, supplemental indicator of our performance when comparing periods before and after our acquisition of Grede. For a reconciliation of Combined CapEx to CapEx, the most directly comparable GAAP measure, see “ADJUSTEMENTS TO
RECONCILE TO US GAAP”.
2

3. 3
Agenda
 Introduction Paul Suber
Vice President of Investor Relations
 Q1 Highlights and Market Outlook George Thanopoulos
Chief Executive Officer
 Financial Results and 2015 Guidance Mark Blaufuss
Chief Financial Officer and Treasurer
 Q & A Session
George Thanopoulos
Mark Blaufuss
Paul Suber

4. FIRST QUARTER 2015
HIGHLIGHTS AND MARKET
OUTLOOK
Metaldyne Performance Group

5. 5
Driving Value
o Secure growth through new business wins
o Execute on vertical integration/cross-selling
o Leverage cash flow model
o Ramp-up of new programs
o Capture value-added, powertrain content
o Continue global expansion
Focus on
Strong
Profitability
and Cash Flow
Generation
Debt Reduction
Maintain or
Grow Dividend
Benefit from
Expected Growth
in Powertrain
and Safety-
Critical
Components
Capitalize on
Global Scale
and Capabilities
Take
Advantage of
Cross-Sell
Opportunities
2015 – 2017
Long – Term Net Sales Target of > $4 Billion
2018 and Beyond

6. 6
2015 First Quarter Highlights
1. Combined Adjusted EBITDA / % of Combined Net Sales (Non-GAAP)
Adjusted EBITDA Margin1
2012 2013 2014 Q1 2015
15.4%
16.7%
17.3%
17.3%
o Financials Highlights
 Net sales of $765.2 million
 Adjusted EBITDA of $132.6 million
 Continued trend of strong Adjusted EBITDA margins (17.3%)
 Earnings Per Share (Fully-Diluted) of $0.47
o Robust overall market with slight headwinds in industrial and
isolated light vehicle markets
o Macro trends of metals market and FX had expected impact
o Continuing Integration efforts
 Emphasis on vertical integration/cross-selling products in powertrain
 Executing on identified cost reduction and efficiency improvement opportunities
o First dividend declared - $0.09/share dividend payable on May 26, 2015 to shareholders of record as of May 12, 2015
o Continued voluntary pre-payment of debt - $10 million of Senior Term Loan in the first quarter of 2015

7. 7
Customer Recognition Awards
Metaldyne wins second consecutive GM Supplier of
the Year Award (Powertrain Category)
Grede wins Meritor Foundry
Supplier of the Year Award
Continuing Focus on Operational Excellence and Delivering Value to our Customers

8. 8
17.0 17.4 17.9 18.3 18.6
2014 2015 2016 2017 2018
North America Light Vehicle Production1
Market Outlook
20.1 20.1 20.5
21.2
22.0
2014 2015 2016 2017 2018
296 325 287 275 268
226 230 235 247 250
522 555 522 522 518
2014 2015 2016 2017 2018
FTR Class 8 ACT Class 5-7
European Light Vehicle Production1
North America Class 5-8 Vehicle Production2
44.4
45.8
48.0
50.0
51.3
2014 2015 2016 2017 2018
Asian Light Vehicle Production1
Positive Outlook for Primary Regions and Markets
1. Vehicle Production in millions: IHS April 2015
2. Vehicle Production in thousands: FTR and ACT March 2015
U.S., 75%
Europe
15%
Rest of World
10%
MPG 2014 End Market Contribution
Light Vehicle
78%
Commercial
12%
Industrial
9%
Other
1%
MPG 2014 Geographic Contribution

9. FINANCIAL RESULTS
Metaldyne Performance Group

10. 10
2015 First Quarter Financial Results by Segment
($ in Millions) HHI Metaldyne Grede MPG Cons.
Net Sales $244.1 $277.7 $243.4 $765.2
Gross Profit 42.3 42.6 43.6 128.5
% of Net Sales 17.3% 15.3% 17.9% 16.8%
Adjusted EBITDA1 46.8 47.1 38.7 132.6
% of Net Sales 19.2% 17.0% 15.9% 17.3%
1. See Appendix for reconciliation to GAAP
All MPG Companies had a Solid First Quarter Despite Metals Market and FX Undercurrents

11. 11
First Quarter Financial Results - GAAP
($ in Millions) First Quarter
2015 2014 Difference
Net Sales $765.2 $540.5 $224.7
Adjusted EBITDA1 132.6 99.7 32.9
Capex 60.7 30.8 29.9
Adjusted Free Cash Flow 2 $71.9 $68.9 $3.0
1. See Appendix for reconciliation to GAAP
2. Defined as Adjusted EBITDA less CapEx
Strong First Quarter Results with Growth Driven by Grede Acquisition

12. 12
2015 First Quarter Results – Combined, Non-GAAP Results
($ in Millions) First Quarter
2015 20141 Difference
Net Sales $765.2 $790.6 $(25.4)
Adjusted EBITDA 132.6 137.4 (4.8)
% of Net Sales 17.3% 17.4%
Capex 60.7 38.3 22.4
Adjusted Free Cash Flow2 $71.9 $99.1 $(27.2)
1. Financial information for 2015 was prepared in accordance with GAAP except Adjusted EBITDA which is a Non-GAAP measure. 2014 is presented on a combined,
Non-GAAP basis, to give effect to the combination of the three business segments as of January 1, 2014. See appendix for reconciliation to GAAP
2. Adjusted EBITDA less Capex
Solid First Quarter Reflects Macro Metals Market/FX Impact and Capex Timing

13. 13
2015 First Quarter Cash Flow
o Strong Q1 Adjusted Free Cash Flow
o Timing of Interest and Income Tax
Payments
o Voluntary Pre-Payment of Debt
o Seasonality of Working
Capital/Other, Net
Strong Free Cash Flow in First Quarter
Adjusted EBITDA1 $ 132.6
Less Capex (60.7)
Adjusted Free Cash Flow1,2 $ 71.9
Memo Items
Cash Paid for Interest $ 16.0
Cash Paid for Income Taxes, Net $ 4.9
Term Loan Repayments $ 10.2
Increase in Working Capital/Other, Net $ 65.3
($ in Millions)
1. Non-GAAP, see Appendix for reconciliation to GAAP
2. Defined as Adjusted EBITDA less CapEx

14. 14
$790.6
$765.2
(18.4)
(14.1)
(2.0)
9.1
Q1 2014 Foreign Currency
Movements
Surcharges Net Price Volume/ Mix/ Other Q1 2015
Net Sales
Combined, Non-GAAP Q1 Bridge 2014 – 2015
$137.4 $132.6
(1.6) (4.5)
(2.7) 4.0
Q1 2014 Foreign currency
Movements
Surcharge/Scrap Sales Net Price Volume/Op. Perf./Other Q1 2015
Adjusted EBITDA
$ in millions
Macro Effects
Macro Effects
Solid First Quarter Impacted by Macro Metals Market/FX

15. 15
Proposed Term Debt Refinancing – Secured Credit Facilities
o MPG launched a refinancing process in April 2015
Opportunistic credit markets, allowing for reduction in annual interest expense
and the creation of an FX hedge
o The proposed re-financing is expected to result in MPG
Reducing annual cash interest payments by $6 - 7 million
Creating an FX hedge by converting a portion of our USD denominated term loan
debt into Euro based term loan debt
o Anticipated change to our go-forward interest rates
USD denominated tranche interest rate expected to be reduced 50 bps to LIBOR +
2.75%, 1.00% LIBOR floor
Euro denominated tranche interest rate is EUROBOR + 2.75%, 1.00% EUROBOR
floor, issued at 99.5
o Estimated total fees and OID of ~ $3.0 million
 Payback of < 6 months
Opportunistic Cash Reduction in Debt Service

16. 16
2015 Guidance Ranges
Guidance 2015E 1
Net Sales $3.0 - $3.15 billion
Adjusted EBITDA2 $520 - $560 million
Capital Expenditures $210 - $220 million
Adjusted Free Cash Flow3 $310 - $340 million
1 Represents reaffirmation of guidance provided earlier this year
2 See Appendix for reconciliation to GAAP
3 Defined as Adjusted EBITDA less CapEx, utilizing high and low ends of Adjusted EBITDA and CapEx
o Incorporates assumptions included on page 20 of appendix
Assumption Updates
o USD to EUR 1.08 (changed from 1.12)
o Metals Market $236 per gross ton
(changed from $250 per gross ton)
o Industrial Market volumes are soft
o Certain North American Passenger
Car platform volumes are soft
o Commercial Vehicle volumes remain
robust
MPG Reaffirming Earlier Guidance Despite Recent Market Moves

17. 17
Driving Value
o Secure growth through new business wins
o Execute on vertical integration/cross-selling
o Leverage cash flow model
o Ramp-up of new programs
o Capture value-added, powertrain content
o Continue global expansion
17.3% Adjusted
EBITDA Margin
and $71.9 million
Adjusted Free
Cash Flow
$10 million in
Debt Reduction
$0.09 Dividend
per Share
Benefit from
Expected Growth
in Powertrain
and Safety-
Critical
Components
Capitalize on
Global Scale
and Capabilities
Take advantage
of Cross-Sell
Opportunities
Q1 2015
Long – Term Net Sales Target of > $4 Billion
2018 and Beyond

18. Q & A SESSION
Metaldyne Performance Group

19. APPENDIX
Metaldyne Performance Group

20. 20
Assumptions
Industry Production / Assumptions 2015E
Light Vehicle SAAR North America ~2.5%
Light Vehicle SAAR Europe ~0%
Light Vehicle SAAR Asia ~3.5%
NAFTA Heavy Truck Class 5-8 ~5%
FX Rates End of Q1 2015 February Month End 12/31/14 Rate
USD to Euro 1.08 1.12 1.22
Mexican Peso to USD 15.24 14.94 14.78
Chinese Yuan to USD 6.14 6.16 6.14
Korean Won to USD 1,111 1,100 1,096
Metals Market – Chicago #1 Bundles $236 per gross ton $250 per gross ton $347 per gross ton
IHS January 2015
FTR and ACT December 2014
FX Rates and Metals Market Rate March 2015

21. 21
GAAP Reconciliation Slide
Q1 Q1
2015 2014
Net income attributable to stockholders $ 32.4 22.6
Income attributable to noncontrolling interest 0.2 0.1
Net income (loss) 32.6 22.7
Addbacks to Arrive at Unadjusted EBITDA
Interest expense, net 27.6 19.4
Loss on debt extinguishment − 0.3
Income tax expense 17.3 10.5
Depreciation and amortization 56.4 42.7
Unadjusted EBITDA 133.9 95.6
Adjustments to Arrive at Adjusted EBITDA
Gain on foreign currency (5.0) (0.1)
Loss on fixed assets 0.2 0.7
Debt transaction expenses 0.1 1.2
Stock-based compensation expense 3.3 1.3
Sponsor management fees — 1.0
Non-recurring acquisition and purchase accounting related items (0.3) —
Non-recurring operational items 0.4 —
Adjusted EBITDA 132.6 99.7
Capital expenditures 60.7 30.8
Adjusted Free Cash Flow $ 71.9 68.9
METALDYNE PERFORMANCE GROUP INC.
RECONCILIATION OF NET INCOME TO ADJUSTED EBITDA
AND ADJUSTED FREE CASH FLOW
(In millions)

22. 22
GAAP Reconciliation Slide
Q1 Q1
2015 2014
Net sales $ 765.2 540.5
Grede pre-acquisition net sales — 250.1
Combined Non-GAAP net sales 765.2 790.6
Adjusted EBITDA 132.6 99.7
Grede pre-acquisition Adjusted EBITDA — 37.7
Combined Adjusted EBITDA $ 132.6 137.4
METALDYNE PERFORMANCE GROUP INC.
US GAAP RECONCILATION
(In millions except per share data)

23. 23
GAAP Reconciliation Slide
Q1 Q1
2015 2014
Net sales $ 765.2 540.5
Grede pre-acquisition net sales — 250.1
Combined Non-GAAP net sales 765.2 790.6
Gross Profit 128.5 83.3
Grede pre-acquisition Gross Profit — 42.0
Combined Gross Profit (Non-GAAP) 128.5 125.3
Adjusted EBITDA 132.6 99.7
Grede pre-acquisition Adjusted EBITDA — 37.7
Combined Adjusted EBITDA 132.6 137.4
CapEx 60.7 30.8
Grede pre-acquisition CapEx — 7.5
Combined CapEx 60.7 38.3
Adjusted Free Cash Flows 71.9 68.9
Grede pre-acquisition Adjusted Free Cash Flows — 30.2
Combined Adjusted Free Cash Flows $ 71.9 99.1
METALDYNE PERFORMANCE GROUP INC.
RECONCILIATION TO COMBINED NON-GAAP
(In millions)

24. 24
GAAP Reconciliation Guidance Slide
Consolidation 2015 Guidance 2015 Guidance
Low End of Range High End of Range
Net income attributable to stockholders $ 102.5 127.8
Income attributable to noncontrolling interest 0.4 0.5
Net income 102.9 128.3
Addbacks to Arrive at Unadjusted EBITDA
Interest expense, net 117.3 117.3
Income tax expense 50.5 65.1
Depreciation and amortization 234.2 234.2
Unadjusted EBITDA 504.9 544.9
Adjustments to Arrive at Adjusted EBITDA
Foreign currency gains (2.9) (2.9)
Stock-based compensation expense 16.6 16.6
Non-recurring operational items (1) 1.4 1.4
Adjusted EBITDA $ 520.0 560.0
(1) Non-recurring operational items including charges for disposed operations,
restructuring costs and other.
Note: The table does not include the impact of the previously announced repricing
of our Senior Term Loan debt on the various line items above. The refinancing does
not affect Adjusted EBITDA.
METALDYNE PERFORMANCE GROUP INC.
US GAAP RECONCILATION
(In millions except per share data)